Description
A leaking rear main seal tanks oil pressure, fouls your oil, and turns a weekend project into a catastrophic engine failure. Peterson’s two-piece Tri-Tec design eliminates guesswork with precision-engineered PTFE construction that seats perfectly and holds pressure through high-RPM runs. If you’re rebuilding a Small Block Chevy 400 or replacing a failed OEM seal, this is the engineered solution that keeps oil where it belongs—inside your engine.
- Rear main seal
- Peterson Fluid Systems
- SBC 400 block
- Two-piece design
- Tri-Tec construction
- PTFE material
- MPN: SM86410
- Sold individually
- Bolt-on installation
