Standard Motor Products Emission Control

About Standard Motor Products (SMP)

Founded in 1919 and headquartered in Long Island, New York, Standard Motor Products (NYSE: SMP) has spent more than a century earning its reputation as one of the most trusted independent manufacturers and distributors of premium automotive replacement parts in the aftermarket. Few brands can point to that kind of longevity, and fewer still have managed to stay at the cutting edge of vehicle technology while doing it. From classic ignition components to the complex electronic systems found in today's hybrid and electric vehicles, SMP's catalog has grown alongside the cars and trucks on the road.

What separates Standard Motor Products from the competition isn't just breadth — it's the depth of engineering behind every part. SMP operates its own vehicle testing center in Irving, Texas, where components undergo on-vehicle validation to confirm real-world durability and OE-matching performance. This commitment to rigorous quality control means professional technicians and serious DIYers alike can open the box and trust what's inside.

SMP's Vehicle Control division covers a vast range of powertrain-neutral and ICE-specific categories — everything from emission controls and fuel systems to advanced driver assistance parts and safety switches. With coverage spanning both import and domestic vehicles across gas, hybrid, and electric powertrains, the brand offers one of the most complete replacement part programs available anywhere in the aftermarket.

One of SMP's fastest-growing areas is its Emission Control program. The brand's comprehensive approach to evaporative emissions leak detection pumps and vapor canisters makes it a go-to single-source solution for shops tackling EVAP system repairs — a segment where complete, validated coverage is critical to passing modern emissions tests. These components are manufactured at American facilities and subjected to computer-controlled bench testing for resistance, leakage, and flow rates before ever reaching a technician's hands.

On the engine management side, SMP's accelerator pedal sensors are engineered with end-of-line testing across thousands of data points to validate output voltages — because even small deviations in throttle signal can translate to drivability complaints or fault codes. Keeping a vehicle's electrical backbone healthy is equally important, which is why SMP's battery cables are designed to deliver reliable conductivity and long-term durability across a wide range of import and domestic applications.

For the steering column and driver interface, SMP produces an extensive line of multi-function switches — the combination stalks that govern turn signals, windshield wipers, headlights, and more. With over 10,000 switch and relay SKUs available, Standard's coverage in this category is among the broadest in the industry.

Whether a shop is diagnosing a check-engine light, restoring a classic, or maintaining a late-model daily driver, Standard Motor Products delivers the precision-engineered parts and industry-leading coverage that professionals have relied on for generations.