The Enginetech S5007 is a 1-piece ptfe/viton rear main seal engineered as a stock replacement for 1975-2014 Cadillac, Chevrolet, GMC, Isuzu and more engine applications.
Important Notes
- 1-Piece design: verify your engine uses a 1-piece seal before ordering - 1-piece and 2-piece seals are not interchangeable.
- PTFE/Viton composite: premium-grade sealing material combining PTFE low-friction with Viton high-temperature resistance.
Specifications
| Brand | Enginetech |
| Part Number | S5007 |
| Product Type | Rear Main Seal |
| Design | 1-Piece |
| Material | PTFE/Viton |
| Country of Origin | India |
| OEM / Aftermarket Cross References | FEL-PRO:BS40515, Detroit Diesel:17293 |
Vehicle Fitment
- Years: 1975-2014
- Makes: Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile
- Models: Astro, Blazer, Bravada, C1500, C1500 Suburban, C2500, C2500 Suburban, C3500, Escalade, Express 1500, Express 2500, Express 3500, G30, G3500, Hombre, Jimmy, K1500, K1500 Suburban, K2500, K2500 Suburban, K3500, P30, P3500, S10, Safari, and more
The rear main seal (also called the crankshaft rear seal) prevents engine oil from leaking between the back of the crankshaft and the transmission bell housing. Over miles and heat cycles, the seal hardens, cracks, or takes a permanent compression set - producing the characteristic oil drip at the bell housing and, if left unchecked, oil contamination of the clutch disc or flex plate. Replacing the rear main seal during a transmission service or engine rebuild restores the final oil seal between the crankshaft and drivetrain, preventing slow leaks and protecting the clutch and flywheel from contamination.
