Fel-Pro Valley Pan Gasket Kit F-100 351M/ 400 77-79

Repair poor idle quality, drivability concerns, and reduced fuel economy with this Fel-Pro valley pan gasket kit! These gaskets seal the lifter valley beneath the intake manifold for 1977-1979 F-100s with 351M or 400 engines.

Features and Benefits:
- Direct-fit replacement for Ford 351M and 400 engines
- Seals the valley beneath the intake manifold
- Helps eliminate excessive intake manifold vacuum leaks
- Can help correct idle surging issues
- Can help improve poor fuel economy caused by manifold leaks
- Engineered for imperfect sealing surfaces
- Manufactured using proprietary Fel-Pro materials

These gaskets are engineered using Fel-Pro's proprietary sealing tech specifically for real-world repairs. They seal imperfect mating surfaces and withstand demanding operating conditions for reliable performance.

Vehicle Fitment:
- 1977-1979 F100
*For models with 351M or 400ci engines.