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Centric Parts Next Generation PQ PRO Disc Brake Pads


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Centric PQ PRO Disc Brake PadsCentric Parts, a division of APC Automotive Technologies, and North America’s leading manufacturer and supplier of aftermarket brake and chassis components, has just introduced the next generation of disc brake pads. Called PQ PRO by Posi Quiet, this advanced friction line has been developed with the professional technician in mind and addresses key service issues that plague many of today’s professional service technicians and their customers, such as brake fade, weak braking response and excessive noise.  

In developing PQ PRO Disc Brake Pads, Centric Parts combined its brake friction development capabilities with cutting edge technology enhancements. PQ PRO is a brake pad line that offers confidence and peace of mind to the technician and delivers safety and comfort to the customer.

PQ PRO features application-specific friction compounds engineered to match or exceed original performance specifications, to ensure reliable stopping power. The pads are enhanced with the addition of a Mu500 friction coating that provides an immediate increase in Mu (stopping power) right out of the box. Advanced multi-layer shims are employed to eliminate noise. Specifically designed hardware is included with each brake pad set to guarantee full restoration of brake system performance, extend service life and eliminate noise caused by pad vibration.

To increase technician and customer confidence, every set of PQ PRO brake pads is backed by a one-year Centric Assured Roadside Assistance Guarantee, which provides the customer added peace of mind and a free ride back to the shop for any brake related issue.

The new PQ PRO by Posi Quiet brake pad line offers application coverage for a wide range of passenger cars, light trucks, vans and SUVs. The PQ PRO line features more than 1,200 SKUs, covering 108 vehicles makes and 2,393 models from 1957 to 2019.

PQ PRO by Posi Quiet joins the extensive Centric Parts brake pad product lineup, which includes Posi Quiet, Centric Premium, Tactical Police, Fleet Performance and CTek.

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general heavy-duty 728x90


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    • By Counterman
      Continental’s line of ATE replacement brake fluids feature special formulations designed to help maximize brake-system performance in all types of electronic, hydraulic and racing systems.
      The full line includes ATE Super DOT 5.1, the technological standard for brake fluids; ATE SL.6 Brake Fluid, the ideal replacement for ESP, ABS and ASR electronic brake systems; ATE SL for hydraulic brake and clutch systems; and ATE TYP 200 for high-performance and racing applications.
      ATE Super DOT 5.1 Premium Brake Fluid’s formulation sets a new performance standard for brake fluids, according to Continental. It combines a high wet boiling point of 356 F with outstanding viscosity at very low temperatures to deliver a capability that previous brake fluids were unable to achieve. With a maximum of 750 mm²/sec. at minus 40 F, ATE Super DOT 5.1 viscosity values exceed even those of ISO Class 6, which are well above the specifications for DOT 5.1 class brake fluids, according to the company.
      ATE SL.6 brake fluidis the optimum replacement for DOT 4 fluid in ESP, ABS and ASR brake systems. Its low-viscosity texture allows electronic brake systems to react more quickly for improved safety. ATE SL.6 offersexcellent application coverage for the advanced braking systems used in high-end vehicle makes and models.
      ATE SL brake fluidis an excellent DOT 4 replacement for use as hydraulic fluid in brake and clutch systems. It features a mixture of polyethylene glycol ethers, polyethylene glycols and boric acid esters of polyethylene glycols with anti-corrosion/anti-aging agents. ATE SL meets and exceeds the requirements of the brake-fluid standards FMVSS-No. 116 – DOT 4, SAE J1704 and ISO 4925, Class 4, among others.
      ATE TYP 200 brake fluid exceeds all DOT 4 standards and excels under the extreme demands of high-performance driving. Compatible with all DOT 3, DOT 4 and DOT 5.1 brake fluids, the formula delivers a minimal drop in boiling point due to outstanding water-binding properties that result in a long-lasting fluid that can provide optimal performance for up to three years under normal highway driving conditions, according to Continental. The high wet and dry boiling points make this fluid an excellent choice for street-driven vehicles as well.
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      ATE is an aftermarket brand of Continental. For more information, visit
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    • By Counterman
      Selling shocks and struts simply comes down to knowledge, and sometimes it’s a little tricky because many of our customers confuse the difference between shocks, springs and struts. So, let’s start by clarifying the difference with information you can pass on the next time you get into the conversation across the counter.
      The suspension of a vehicle includes every component that supports the weight of the vehicle and travels up and down in response to the road surface, driving conditions or vehicle load. Springs are the components that support that actual weight of the vehicle, but they’re just one part of the suspension. Shock absorbers are the components that dampen the movement of the springs, but again, they too are just one part of the suspension.
      In a traditional upper and lower A-arm front suspension (one of the oldest styles), the shocks and springs mount in separate locations, and the springs are either coil or torsion-bar type. Vehicles with this type of suspension – such as older full-frame vehicles and full-size trucks – typically have solid-axle leaf- or coil-spring rear suspension, in which, of course, the springs and shocks also are separate components.
      Struts
      The term “strut” is a shortened reference to the MacPherson strut design of suspension. A strut suspension differs from a “traditional” suspension in the manner that the spring and shock are assembled together as a unit that mounts to the vehicle body on top, and an axle component on the bottom. The top of the assembled unit includes rubber mounting, and in the case of front suspension, a bearing to allow it to rotate in response to steering (Figure 1).
      link hidden, please login to view The assembled coil-spring and shock-absorber unit is referred to as the strut, but from a functional standpoint, you can still think of them as a shock, spring and related mounting components – because that’s all they are.
      Coil-Overs
      So, what’s a coil-over? It’s a coil spring mounted over a shock absorber (Figure 2). Sound sort of like a strut? Guess what? It’s basically the same thing. The only difference is that coil-overs typically are smaller with adjustable coil-spring perches, which makes them a very versatile choice for performance suspensions, allowing adjustable ride height and use in a variety of suspension designs. But again, don’t let the fancy name throw you: It’s just a spring and a shock.
      link hidden, please login to view In addition to these, there are many different types and variations of suspension; definitely a topic for another article, but for the sake of this discussion, regardless of what they are, there are always springs that support the weight of the vehicle and shocks that dampen the movement. Most new cars and small SUVs have strut front suspension. Some have strut rear suspension, but separate coil-spring/shock-absorber rear suspensions are just as common. Full-size trucks and SUVs typically have upper/lower A-arm suspension in front and leaf-spring suspension in the rear.
      For many years, suspension springs in general were never a problem for technicians. They rarely broke, and it took a long time before they sagged or weakened, regardless of the style of suspension. Shocks wore out frequently – a common problem – and we’ve all replaced many shocks over the years. If it was a car that had strut suspension front or rear, you removed the strut assembly, compressed the coil spring, removed the top plate and disassembled the strut.
      Parts of a strut included the upper plate/bearing, coil spring, bump stop, dust boot, various washers or spacers and the shock-absorber/strut housing itself (Figure 3). Sometimes, the lower spring perch is a separate piece that slides onto the shock/strut housing, and sometimes it’s part of the strut housing. The shock-absorber/strut housing may be one piece (not serviceable), but often, replacing the shock absorber itself was yet another step that included removing a large nut on the top of the strut housing and sliding it out.
      The strut housing was reused, a new shock was installed (or if not serviceable, the housing was replaced), then the original spring was reinstalled along with a new upper mount and hardware. I’ve probably done it a thousand times, until … dun, dun dun …the quick strut!
      But before we get into that fast fix, let’s drive it home with a final word of wisdom: Shocks are not struts, and struts are not shocks, but a shock is part of a strut. The closest you get is when the strut housing isn’t serviceable, and the shock absorber and strut housing are one piece. On a vehicle that has separate suspension springs and shocks, you can replace one or the other. On a vehicle that has strut suspension, you also can replace one or the other. Think about it like this: Regardless of the type of suspension, the same components are there, and they do the same things – they just differ in the way they are put together.
      link hidden, please login to view Every time a shock absorber is collapsed or expanded, oil is forced between different chambers, through a small orifice inside. The effort that it takes to force the oil through is what dampens the suspension movement, and you can feel the resistance when you attempt to move the shock rod by hand.
      What makes them good or bad? If there’s no resistance in the movement of the shock rod, the shock is bad. It can’t dampen the movement of the suspension, and when you hit a bump, the car will bounce like a pogo stick. On the freeways around here, I see it at least once a day.
      Traditional shock absorbers commonly experience aeration, meaning air bubbles mix in the oil. This causes a similar effect as air in brake fluid, and the performance of the shock absorber diminishes. The solution? A gas-charged shock. The pressure keeps the air bubbles from forming, creating consistent performance. Traditional shocks tend to provide a slightly smoother ride; the type of ride we are used to in a big-old car, whereas gas-charged shocks will stiffen up the ride feel slightly but offer better handling performance.
      Service Life of Shocks
      How long a shock absorber lasts depends on many factors such as age and mileage, but one of the biggest is initial quality. I’ve seen them last anywhere from one to 15 years, and with all the variables, it just comes down to one question: Are they still good? There are two things to look at. One, are they leaking? If they leak oil, they are probably bad, but not always. Some shocks can exhibit minor signs of seepage, yet they still operate correctly. The second – and the ultimate determining factor – is the bounce test.
      With the vehicle sitting on the ground, quickly push down on the suspension and release it. Focus on one spot of the vehicle and watch closely. The vehicle should return to its original height and stop dead. No wiggle, no jiggle – a dead stop exactly where it started. A slight hop above, then a return to original height, means the shocks are worn. If they’re completely wasted, it’ll pogo-stick where it sits.
      The bounce test is the only way you can accurately assess performance, and a visual inspection for leaks or worn mount bushings, coupled with age and mileage, can help you determine if it’s time to replace the shocks, or if it’s time to plan for it in the near future. Recognizing the fine line between good and bad shocks can take some experience, and there’s a point where they can begin to adversely affect tire wear and braking distance before any noticeable handling or ride-related symptoms appear, so tire and brake wear should also be considerations when assessing shock condition.
      At this point shocks may seem cut-and-dry, but there are some additional topics that may come up when selling them, and it’s good to be prepared with an answer.
      Compression/Rebound
      When the shock rod travels in, it’s considered the compression stage of operation; when the rod travels back out, it’s considered the rebound stage. The percentage of compression and rebound stage can differ depending on the application of the shock, but normal shock operation is about 25% compression stage and 75% rebound. This allows the suspension spring to react quicker to the road surface for the
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      One of the most common examples of different compression/rebound rates is on the front shocks of a drag car. A 90/10 shock absorber is the most common application here, meaning 90% of the effort to move the shock rod occurs during compression, and it only takes 10% of the force to allow the shock to rebound. On a drag car, under heavy acceleration, this allows the front end to come up easily – shifting the weight to the rear wheels for traction – then slowly allows the suspension to settle to prevent bouncing in the front.
      You’ll also see 60/40 or 50/50 percentages depending on the type of racing, performance or ride intended by a manufacturer, and maybe even something different than what I’ve listed here. Generally, you’ll be selling shocks by application, so you won’t have to be concerned about the numbers. But, you never know when someone might ask, so it’s always good to know.
      Adjustable Shocks
      Many performance shocks are built with adjustable valving, allowing you to change the compression and rebound rates to suit your needs. The adjustments can generally be made by an accessible knob on the side or top of the shock. Some shocks offer adjustment for only one aspect, some offer it for both. This also is the basic idea behind many modern suspensions that offer adjustable dampening, such as luxury or sport mode options. Instead of a manual adjustment to change compression and rebound rates, the adjustment is performed by a built-in electronic actuator that receives its signals from the vehicle control unit.
      Measuring Shocks
      Sometimes it becomes necessary to measure the required length of a shock absorber for a vehicle that’s been raised or lowered, changing the suspension travel. This is especially common for lifted trucks. If the question comes your way, it’s not hard to do. The specs you will need are compressed and extended height, but there are three measurements to take to get them.
      Park the vehicle on level ground, then first measure the static height, which is simply the distance between the upper and lower shock mounting points. For this to be an accurate measurement, you’ll have to remove the shock. Next, with the vehicle still on level ground, measure the distance between suspension bump stop and the contact point for the bump stop. Subtract this from the static height and you have your compressed height.
      To get extended height, jack up the vehicle so the wheel is off the ground, support it with a jack stand (for safety), then measure again between the upper and lower shock mounting points.
      Load-Supporting Shocks
      Many traditional shock absorbers are designed to assist the suspension when towing or hauling heavy loads. These are available as both air- and spring-assisted types. They are not designed to increase the load-carrying ability of a vehicle, but rather to help maintain the proper ride height and prevent bottoming out with a heavy load. Spring-assisted shocks offer a consistent load assist without affecting ride quality, and air shocks are adjustable to handle a wider range of varying loads but are designed to have the additional pressure released when the load is removed so the ride height returns to normal.
      Selling Struts
      When a customer comes in and wants to buy struts, the first thing that should come to your mind is what do they really need? Do they need a complete strut assembly? Or do they just need a strut housing? Maybe they only need shocks and just have their terminology wrong. Once you determine they indeed need struts, most likely you will direct them to a quick strut.
      As I mentioned earlier, we always used to rebuild struts. It never seemed like a problem to me, but then again, I was used to it, and broken coil springs were never much of a problem. Then, all of a sudden, coil springs started breaking frequently, and some cars were known for it. When it came to a repair, it was common to find the shock leaking, and since you had everything apart, it didn’t make sense to replace the spring with an old shock. Then you found that the strut mounts were worn, so you ordered those too.
      No matter how you looked at it, you had a lot of parts and a lot of labor involved. Then came the quick-strut: a fully assembled strut with new spring, shock, strut mounts and everything, ready to bolt in. On vehicles that needed everything, this proved to be an efficient solution.
      Do I use them all the time? No. They’re not available for all vehicles, and in some cases on certain performance vehicles, the OE equipment is the best and only option for quality and customer satisfaction. You may have to do it the old-fashioned way.
      But for many applications – especially on older high-mileage vehicles – if the shock is completely worn out, you can bet the rest of the components are too, and it just makes sense. Sure, a lot of technicians like them because it makes the job much quicker and you don’t have to fight with a coil spring, but it more importantly gives you a big advantage in selling to DIYers, because most likely they don’t have the tools to compress the spring.
      Some final extras are sway-bar links, which often attach to a bracket on the strut housing. They’re often hard to remove and it’s probably a good time to replace them too. Shock absorbers should come with all needed hardware, and some shocks and struts are bushing-mounted at the bottom. As with any suspension bushings, these should be tightened with the vehicle at ride height to prevent premature wear of the bushing.
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    • By Counterman
      TNT Parts announced that it has added Lithonia, Georgia-based D&J Supply Inc. to its team through an acquisition.
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    • By Race Brake Shop
      It is important to bed in your new brakes during the installation of new brake pads or brake rotors. Race Brake offers a very simple procedure to link hidden, please login to view. Our installation process should be followed as per the application-specific brake pad installation instructions. The total bedding process should not take more than 10-15 minutes. 


    • DIY like a pro! Shop from over 1,000,000 Repair Manuals at eManualOnline.com! As low as $14.99 per manual. Shop now.


      DIY like a pro! Shop from over 1,000,000 Repair Manuals at eManualOnline.com! As low as $14.99 per manual. Shop now.


      DIY like a pro! Shop from over 1,000,000 Repair Manuals at eManualOnline.com! As low as $14.99 per manual. Shop now.

    • By Counterman
      Advance Auto Parts announced it has opened 22 new stores in the Los Angeles market as part of the company’s broader strategic expansion into the Western United States. 
      In spring 2021, Advance announced its plan to expand into California by leasing 109 Pep Boys stores and converting them to Advance stores, more than half of which are in the Los Angeles area. 
      “We estimate that 70% of our customers in Los Angeles fit the profile of the classic do-it-yourselfer. Pairing that with the more than 7.6 million registered vehicles in Los Angeles’ unique car culture, this is a tremendous opportunity for Advance to bring care and speed to motorists through expert advice and best-in-class products and services,” said Tom Greco, president and chief executive officer of Advance. “Our timing couldn’t be better as the average vehicle age increases while used car and gasoline prices are rising, resulting in greater demand for vehicle maintenance.”
      Vehicle owners in Los Angeles and other parts of the West will gain access to everything Advance stores offer, such as free curbside and in-store pickup within 30 minutes of ordering online, as well as some of the most trusted automotive brands in the world, including DieHard, the company noted. In response to the emerging popularity of hybrid and electric cars, Advance last month introduced the DieHard EV battery – the first-to-market 12-volt battery designed specifically for hybrid and electric vehicles and sold exclusively at Advance.
      Advance also will support local communities and professional technicians across California by employing approximately 1,850 team members in the state when all 109 stores are converted, including staffing the company’s newly opened 45,000-square-foot “super hub” flagship location, centrally located off the 10 and 110 freeways in the Pico Union neighborhood near downtown Los Angeles. 
      With a growing need to service the approximately 14 million registered vehicles in California, including an increased number of electric and hybrid vehicles, Advance also brings the ability for professional repair partners to expand their technical knowledge with virtual and in-person training opportunities, available through Carquest Technical Institute and Worldpac Training Institute, which are developed and taught by factory-trained instructors and available to automotive technicians nationwide, Advance noted.
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