The Enginetech S0117 is a 2-piece silicone rear main seal engineered as a stock replacement for 1965-1990 Chevrolet, GMC, Pontiac engine applications.
Important Notes
- 2-Piece design: verify your engine uses a 2-piece seal before ordering - 1-piece and 2-piece seals are not interchangeable.
- Silicone construction: broad temperature tolerance and strong chemical resistance for modern oil formulations.
- Offset Double Lip configuration.
Specifications
| Brand | Enginetech |
| Part Number | S0117 |
| Product Type | Rear Main Seal |
| Design | 2-Piece |
| Material | Silicone |
| Lip Configuration | Offset Double Lip |
| Country of Origin | India |
Vehicle Fitment
- Years: 1965-1990
- Makes: Chevrolet, GMC, Pontiac
- Models: Acadian, B60, B6000, Bel Air, Biscayne, Blazer, Brookwood, C10, C10 Pickup, C10 Suburban, C15, C15 Suburban, C15/C1500 Pickup, C15/C1500 Suburban, C1500, C1500 Suburban, C20, C20 Pickup, C20 Suburban, C25, C25 Suburban, C25/C2500 Pickup, C25/C2500 Suburban, C2500, C2500 Suburban, 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.
