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Tenneco Expands Semi-Active Suspension Techogy To North American SUV Market
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Icahn selling auto parts maker Federal Mogul to Tenneco for $5.4 billion
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By Counterman
If a customer mentions that they’re seeing fluid trickling from a suspension bushing, their eyes aren’t playing tricks on them. That bushing could be hydraulic.
Hydraulic suspension bushings were developed in response to customer demands for smoother, quieter and better-handling vehicles. To achieve this, sophisticated suspension components are needed. Modern suspension systems look a lot different than they used to, with multiple links used to maintain suspension geometry.
A non-hydraulic suspension bushing typically will feature a number of empty voids inside them. These voids are a product of clever engineering, and they allow for deflection/compression in a specific direction when placed under load. Hydraulic bushings fill those empty voids with a fluid. This fluid works like a hydraulic damper, while still allowing for deflection/compression when under load.
The word “hydraulic” might imply that hydraulic fluid or oil is used inside these bushings, but they typically use a glycol mixture instead. Oil or hydraulic fluid would break down the rubber inside the bushing and cause it to fail prematurely. If you’ve ever seen a radiator hose that got coated in engine oil, you know what we’re talking about.
These bushings are engineered with a certain tire and wheel combination in mind. This means increasing the tire and/or wheel sizes can throw this off, and the suspension may need to be repaired more frequently.
Hydraulic bushings are able to isolate noise, vibration and harshness (NVH) from entering the vehicle cabin more effectively than standard bushings. Hydraulic bushings can be firmer without compromising passenger comfort, leading to crisp steering response and road feel. They will deflect less under load, such as braking or hard cornering, and this means better vehicle stability.
But, all bushings eventually will wear out and need to be replaced. Hydraulic bushings may crack, rip or tear, just the same as non-hydraulic bushings will. The big giveaway is the hydraulic fluid leaking from the bushing.
Failing hydraulic bushings typically exhibit one or more of the following symptoms:
Clunking or knocking noises while braking or turning Evidence of fluid leaks coming from the bushings Unwanted suspension movement Tire wear (from excessive suspension movement) Increased NVH transferring into the vehicle cabin Replacement Tips
Hydraulic bushings likely will be more expensive to replace than standard bushings. Here are a few tips and tricks to share with your customers.
Let’s start with the most important tip: Always check the OE service information. Even if your customer has performed this type of repair in the past, it’s still a good idea to check the service information to see if anything has been updated recently. They should road-test the vehicle before and after the repair.
If your customer is pressing a hydraulic bushing into or out of a suspension arm, they should be careful not to apply force directly against the rubber part of the bushing. Doing this will most likely rupture the rubber bushing, causing the hydraulic fluid to spill all over the floor. Once this happens, the bushing is ruined and must be replaced. Be sure to only apply force against the outer race or sleeve.
Modern bushings likely will feature some sort of locating mark, notch or indicator. Reference the OE service information to learn how to correctly align the bushing to the suspension arm. Doing this will allow the suspension to articulate properly. Failure to do this may cause the suspension to bind up during movement, and/or cause the bushing to wear out or fail prematurely.
It’s strongly recommended to wait to torque the fasteners down to specification until the suspension has been set to normal ride height. If the fasteners are tightened down with the vehicle in the air, the bushing will be forced to twist when the vehicle is lowered onto the ground. This means that the bushing will always be twisting at normal ride height, and this will surely lead to premature wear, tearing and/or failure.
Finally, your customer should perform a four-wheel alignment if the service information calls for it. Some suspension components may not require an alignment after service; it depends on the make, model and application.
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By Counterman
With more than 144 million import vehicles on the road today, Four Seasons continues to expand coverage in all major HVAC categories.
The expanded portfolio includes compressors, hose assemblies, accumulators, blower motors, evaporators, heater cores, engine-coolant components and more.
“With the latest coverage available for HVAC parts from Acura to Volvo, Four Seasons now offers the largest import coverage in the aftermarket, making us the import coverage leader,” said Ron Miller, director of marketing, SMP Temp Control Division. “Today, imports account for almost half of the mix of vehicles in operation. Plus, with our growing commitment to providing replacement parts for the latest hybrid and electric vehicle systems, we now offer 94% coverage for late-model import hybrid and electric applications.”
For more information on Four Seasons, contact a local account sales manager or visit
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By Counterman
Standard Motor Products (SMP) continues to add to its comprehensive emission-control program.
The program includes evaporative emission control (EVAP), exhaust-gas recirculation (EGR) and positive crankcase ventilation components.
Standard’s emission-control program helps technicians repair and maintain these complex systems.
Standard’s EVAP program includes canister-purge solenoids, canister-purge valves, canister-vent solenoids, EVAP-system integrity modules (ESIM), fuel-vapor canisters, fuel-vapor leak-detection pumps, vapor-canister purge valves, vapor-canister vent hoses and more.
Recently released Standard EVAP components include canister-purge solenoids for 2.1 million vehicles, including the 2021-2018 Honda Accord and 2021-2019 Acura RDX, as well as fuel-vapor canisters for popular import and domestic vehicles such as the 2022-2020 Hyundai Palisade and 2019 Chevrolet Malibu.
Fuel-vapor leak-detection pumps are now available for the 2021-2015 Volkswagen Golf and 2019-2015 Volkswagen GTI. Canister-purge valve hoses recently were introduced for 11.5 million General Motors, Chrysler, Dodge and Jeep vehicles.
Standard’s full EGR program includes EGR valves, control solenoids, position sensors, pressure sensors and EGR tubes. EGR valves covering an additional 4 million vehicles, including the 2023 RAM 2500 and 2021-2020 Ford Explorer, recently have been introduced. EGR control solenoids also are available for 1.1 million Hyundai and Kia vehicles, including the 2019-2015 Hyundai Sonata and 2020-2016 Kia Optima.
Standard’s crankcase program features crankcase breather hoses, crankcase filters, PCV valves, crankcase ventilation filters and more. More than 40 engine-crankcase breather hoses have been added since the beginning of the year, offering new coverage for more than 40 million vehicles. New PCV valves also have been released for General Motors, Lexus and Toyota vehicles, including the 2019-2018 Chevrolet Traverse.
Standard’s emission-control components are precision-engineered and tested for durability and OE-matching performance, according to the company. These parts undergo rigorous examination and product validation, including extensive performance benchmarking, product lifecycle testing and end-of-line testing. To ensure trouble-free operation, each component must pass comprehensive quality testing, including computer-controlled bench testing for resistance, leakage and response and flow rates, according to SMP.
“Our emission-control program offers more than 1,500 EVAP components and 4,000 products for crankcase and EGR emissions, providing our trusted partners with all of the components they need to keep vehicle emissions low,” said John Herc, vice president of vehicle control marketing for SMP. “Maintaining emissions-control systems with premium components is good for our industry and the planet.”
All new Standard emission-control components are listed in the catalog found at
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By Counterman
To further enhance and expand its replacement parts and service business in North America, Stellantis announced the bproauto aftermarket parts brand as its new line of high-quality, competitively priced, replacement parts.
Following decades of success in Europe and other international markets, including the Middle East and South America, the newly introduced
link hidden, please login to view is available for most makes and models to help combat the rapidly changing aftermarket and the long-term shift to electrification as vehicles and their components are becoming increasingly complex and digital, the automaker noted. The original-equipment-backed parts come with up to a two-year/unlimited-mile warranty. In addition, batteries have up to two-year free replacement coverage and brake pads carry a limited lifetime warranty, according to Stellantis.
“With the introduction of bproauto, we’re further enhancing the customer experience by offering a new, competitively priced, private-label line of high-quality, factory-backed parts for most makes and models,” said Mike Koval, head of Mopar North America. “While Mopar will remain the global original-equipment parts and authentic accessories brand for Stellantis, bproauto will offer an alternative for nearly all brands and all cars – new, used, owned, rented or shared. With Mopar and bproauto, our dealerships offer a 360-degree, multi-brand, one-stop-shop solution for nearly all customers, all vehicles and all brands.”
In North America, 30 parts categories will be available for most makes and models to support the ongoing transition of the automotive repair industry. Additional product lines will phase into the Stellantis dealership network.
The following parts are available now from bproauto:
Air filters Batteries Brake pads Brake rotors Hub bearings Oil and oil filters Tire-pressure monitoring systems Additional high-quality products coming from bproauto will include:
ABS sensorsIgnition coilsA/C compressorsLubricantsA/C condensersO2 sensorsA/C evaporatorsRadiatorsAlternatorsShocksBall jointsSpark plugsBattery cablesSpark plug wiresBrake calipersStartersBrake hardwareStrutsBulbsTaillampsChemicalsThermostatsControl armsTie-rod endsFiltration: cabin and transmissionTiming belts/tensionersFuel injectorsU-jointsFuel pump modulesWater pumpsFunctional fluidsWiper bladesHeadlamps The post
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By Counterman
Westar Distribution recently announced the release of its new line of complete air-suspension kits.
The kits cover millions of vehicles, depending on the type of kit the customer chooses.
Kits are supplied in two configurations: direct replacement kits and complete service kits. Both configurations are available as front, rear or complete kits.
Direct replacement kits include:
Air spring (if applicable) Air-strut unit Compressor Solenoid or control valve (where applicable) Complete service kits include:
Air Spring (to rebuild the original air strut) Compressor Solenoid or control valve (where applicable) For more information and application information, visit
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