Dorman Engine Oil Pressure Sensor Filter

Dorman Engine Oil Pressure Sensor Filters: Small Part, Big Protection

When a low oil pressure warning light illuminates on the dashboard of a GM V8 truck or SUV, the culprit is often not the sensor itself — it's a tiny filter screen sitting beneath it. Engine oil pressure sensor filters are a frequently overlooked component, but they play a critical role in keeping your engine's monitoring system accurate and your engine protected.

The filter screen's purpose is to prevent contaminants from damaging the solenoids that control the Active Fuel Management (AFM) system — solenoids that are part of the Valve Lifter Oil Manifold (VLOM), which switches the engine between eight-cylinder and four-cylinder operation for fuel economy. When the screen becomes restricted, it reduces oil flow to the oil pressure sensor and can trigger a false low oil pressure warning. Replacing this small screen is often all it takes to restore accurate sensor readings and silence a nuisance warning light.

Why Choose Dorman for Oil Pressure Sensor Filters?

Dorman has built its reputation on solving exactly these kinds of problems — targeted, precision-engineered replacement parts that address known failure points without requiring costly assembly swaps. Their engine oil pressure sensor filter lineup, including the popular 917-143 and 917-143CD part numbers, reflects that philosophy directly.

• Direct replacement fit: Each filter is designed to match the fit and function of the original filter on specified vehicles, restoring functionality when the original has failed due to clogging.
• Debris filtration: The filter is designed to filter debris and other harmful contaminants from entering the vehicle's engine oil pressure circuit, and is quality tested to ensure an exact fit every time.
• Durable materials: Constructed from durable plastic and steel for long-lasting performance.
• Limited lifetime warranty: Backed by a limited lifetime warranty for added peace of mind.
• Over a century of expertise: Dorman has been driving new aftermarket solutions for more than 100 years, with a catalog covering both light duty and heavy duty vehicles across nearly every system.

Fitment: GM V8 Vehicles with Active Fuel Management

Dorman's engine oil pressure sensor filters are designed to maintain optimal sensor performance in select Buick, Cadillac, Chevrolet, GMC, and Pontiac models — including vehicles like the Cadillac Escalade, Chevrolet Silverado 1500 and 2500 HD, Camaro, Impala, GMC Sierra 1500 and 3500 HD, Yukon XL, and Pontiac G8 and Grand Prix. The filter under the oil pressure sensor in Gen IV LS engines is specifically there to protect the VLOM solenoids from debris; engines without AFM do not have this screen.

For DIYers and shop technicians alike, replacing just the failed filter screen instead of the entire assembly is a smart, cost-effective approach — and Dorman makes that job straightforward with a part engineered to OEM specifications. Whether you're chasing a persistent oil pressure warning light or performing preventive maintenance on a high-mileage GM V8, Dorman's engine oil pressure sensor filters deliver the right fit, the right materials, and the reliability that comes from a trusted aftermarket solutions leader.