National PB-652-HD Clutch Pilot Bushing

Clutch Pilot Bushing for Manual Transmission Service

The National PB-652-HD clutch pilot bushing is a bronze replacement part engineered to OE specifications for manual transmission applications. It is built for vehicles such as Chevrolet S10, Camaro, Pontiac Firebird, and GMC Sonoma models that require a heavy duty clutch pilot bushing.

With a 0.592 in bore, 0.829 in outside diameter, and 0.755 in width, this National clutch pilot bushing is sized for precise crankshaft support and consistent clutch input shaft alignment. The bronze construction is selected for durability in demanding drivetrain service.

Key Features

• Premium-grade bronze construction
• OE-spec dimensions for accurate fitment
• 0.592 in bore, 0.829 in outside diameter, 0.755 in width
• Heavy duty clutch pilot bushing application
• Cross-references SKF B652HD and Timken PB652HD
• National PB-652-HD part number for direct identification

Detailed Description

National PB-652-HD is a clutch pilot bushing designed for manual transmission systems that rely on stable input shaft support at the crankshaft. The bronze material helps provide the dimensional stability expected in OE-style drivetrain service, while the listed bore and outside diameter support accurate installation in the intended application. This part is a direct service option for a wide range of vehicles, including Chevrolet S10, Chevrolet Camaro, Pontiac Firebird, and GMC Sonoma.

This part cross-references SKF B652HD and Timken PB652HD for the same application. The National PB-652-HD designation also helps simplify parts matching when replacing a worn pilot bushing in heavy duty clutch service.

What It Helps Address

• Excessive clutch input shaft play
• Noise or vibration from a worn pilot bushing
• Difficulty maintaining smooth clutch engagement
• Wear caused by an out-of-spec bronze bushing
• Manual transmission alignment issues at the crankshaft

Installation Notes and Tips

Verify bore, outside diameter, and width before installation to confirm the bushing matches the crankshaft and input shaft requirements. Clean the bore thoroughly, inspect the mating surfaces for wear, and install the bushing squarely to avoid distortion. Confirm vehicle-specific fitment for the exact year and model before service.

Compatible With 1982-2003 Chevrolet S10, 1991-2003 GMC Sonoma, 1982-2002 Chevrolet Camaro, 1982-2002 Pontiac Firebird, 1996-2000 Isuzu Hombre, 1991-1994 Isuzu Pickup, 1991-1992 Isuzu Rodeo, 1989-1991 Isuzu Trooper, 1982-1990 GMC S15, 1983-1989 Chevrolet S10 Blazer, 1983-1989 GMC S15 Jimmy, 1981-1987 Chevrolet Chevette, 1976-1987 Pontiac Acadian, 1981-1987 Pontiac T1000, 1985-1986 Jeep Cherokee, and 1986 Jeep Comanche in heavy duty clutch pilot bushing applications.

Quality Assurance

National manufactures this bushing with premium-grade bronze and engineers it to meet OE specifications for dimensional accuracy and service fit.