Pioneer Cables 839008 Engine Camshaft Thrust Button

Engine Camshaft Thrust Button for OE Replacement

Pioneer Cables 839008 is an engine camshaft thrust button for valve train service and OE replacement applications. It is listed for a wide range of Buick passenger cars, including Buick LeSabre, Regal, Riviera, Park Avenue, Reatta, Century, Skyhawk, and Skylark models across 1975-1997.

Key Features

• Engine camshaft thrust button for valve train repair
• OE replacement application coverage for Buick V6 and V8-era passenger cars
• Fits 1975-1997 Buick LeSabre, Regal, Riviera, Park Avenue, Reatta, Century, Skyhawk, and Skylark applications
• Part number 839008 for catalog and service matching
• Position listed as N/A in the fitment data

Detailed Description

Pioneer Cables 839008 is a camshaft thrust button used in engine valve train service where camshaft end control is required. This OE replacement part is cataloged for multiple Buick applications, including 1976-1997 Buick LeSabre, 1990-1997 Buick Regal, 1979-1993 Buick Riviera, 1991-1997 Buick Park Avenue, 1988-1991 Buick Reatta, 1984-1988 Buick Century, 1975-1981 Buick Century, 1975-1980 Buick Skyhawk, and 1975-1979 Buick Skylark. The part number 839008 is also useful when cross-checking service records and engine rebuild parts lists.

What It Is Used For

• Camshaft end-play control during engine assembly or repair
• Restoring proper valve train operation in Buick engine service
• Replacing a worn or damaged camshaft thrust button
• Supporting accurate OE-style engine rebuild work

Installation Notes and Tips

Verify engine code, camshaft setup, and service dimensions before installation. Confirm the vehicle against the listed Buick fitment by year and model, since coverage varies by application. Use the part number 839008 during ordering and inspection to reduce catalog mismatch.

Quality Assurance

Pioneer Cables catalogs this part as an OE replacement engine component for the listed Buick applications. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.