These Allstar Performance valve covers are tall, polished cast aluminum covers built for small block Chevy perimeter bolt applications. They are sold in pairs, with one cover fitted with two 1-3/8 inch baffled breather tubes. Breathers are sold separately. Mounting hardware is not included.
- Style: Tall
- Mounting: Perimeter bolt
- Material: Cast aluminum, polished
- Breather tubes: Two, 1.375 in diameter, baffled
- Hardware included: No
- Quantity: Pair
Spec Sheet: Allstar Performance Spec Sheet (PDF)
FAQ
What mounting style do these valve covers use?
The ALL26139 valve covers use a perimeter bolt mounting style for small block Chevy engines.
Do these covers include breather tubes?
Yes, one cover in the pair is fitted with two 1-3/8 inch baffled breather tubes. Breathers themselves are sold separately.
What material are these valve covers made from?
They are made from cast aluminum with a polished finish.
Is mounting hardware included?
No, mounting hardware is not included with the ALL26139 valve covers.
How is the ALL26139 different from the ALL26137?
The ALL26139 uses perimeter bolt mounting without hardware, while the ALL26137 uses center bolt mounting and includes hardware.

