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Small Block Chev 400 ci 168 Tooth 2 Piece Rear Main Seal Flexplate
$123.30
SKU: AF89-400
Reliable shipping
Flexible returns
Small Block Chevy 400 ci 168-Tooth External Balance Flexplate
Built for high‑power, high‑RPM small block Chev engines, this Aeroflow 168‑tooth flexplate is designed for external balance, 2‑piece rear main seal applications, and performance-driven builds. It’s the robust choice when you’re pushing modern power levels through your street or strip setup.
Key features
- 168‑tooth flexplate for external balance setups
- Outside diameter: 14-1/8" (359mm)
- For 2‑piece rear main seal installations
- Durable construction: extra thick material with double welds and anodising
- Converts to two converter bolt circles: 10.5" and 11.5"
- Suitable for Small Block Chevy 383/400ci applications
What makes it stand out
Unlike thinner, generic flexplates, this unit is built to endure the abuse of modern powertrains. The extra‑thick stock, combined with double welding and a protective anodised finish, resists fatigue, heat, and corrosion under demanding launches and sustained high RPM. The dual bolt‑pattern compatibility adds flexibility when pairing with different torque converters, simplifying swaps and upgrades.
Compatibility and use cases
- Engine compatibility: Small Block Chevy 383‑400ci
- Balance: externally balanced for 2‑piece rear main seal motors
- Converter compatibility: supports both 10.5" and 11.5" bolt circles
- Ideal for performance street cars, drag builds, and high RPM applications where reliability under load matters