Genuine Jeep J20 Secondary Air Injection Check Valve

The J20 Secondary Air Injection Check Valve by Jeep offers clean performance as a one-way gate, shielding the AIR pump while supplying excess oxygen to the exhaust to help reduce harmful emissions and protect significant hardware. You can count on this tried-and-tested Secondary Air Injection Check Valve to fit any production year of the tough J20 lineup, from the classic J20 Honcho all the way to the Golden Eagle trim. This valving also has rock-solid reliability, so it is a popular choice among Jeep drivers, showcasing Jeep's impressive heritage. During cold starts, the upstream Secondary Air Injection Check Valve floods hot exhaust gases with fresh air. Then, a downstream Secondary Air Injection Check Valve, located just ahead of the catalytic converter, continues the oxidation as heat rises. The result is improved economy and an ability to pass emissions testing. The component springs open, allowing pressurized air to flow through when the pump forces it forward. The Secondary Air Injection Check Valve slams shut when back pressure attempts to reverse flow. Thus, the AIR pump on any J20 prevents the scorching of exhaust and damage that could incapacitate a Jeep far from home. The later J20 editions changed the seals of the Secondary Air Injection Check Valve to higher-temperature materials while retaining the same mounting footprint so that they remain a simple swap across model years, enabling every Jeep enthusiast to install with confidence. The diverter valve vents this excess air to keep the Secondary Air Injection Check Valve closed during deceleration. This avoids backfire and saves catalytic life on a hard-working J20 as the engine runs rich. Drivers observe a steadier idle, sharper throttle response, and a nice increase in mileage all from a part that weighs less than a pound. Evidence that Jeep dependability begins with a trustworthy Secondary Air Injection Check Valve that outshines the competition in the parts market.

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