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Vehicle Info NeededMANLEYPART NUMBER: 660-11525-8
Severe Duty Exhaust Valves Big Block Chevy
$30107
Ships on 09/09/2026
Lowest Price GuaranteeExhaust Valves1.880'' Valve Diameter 3/8'' Valve Stem Diameter
- Severe Duty Exhaust Valves
- Big Block Chevy
- 1.880'' Diameter
- 3/8'' (0.3715'') Stem Diameter
- 5.464'' Overall Length (+.100)
- Stainless Steel
- 8/pkg.
- Type: Exhaust Valve XH-428 Material
- Head Diameter: 1.880'
- Stem Diameter: 3/8' / 0.3715'
- Installed Height: +.100' Longer
- Overall Length: 5.464'
- Tip Length: 0.220'
- Underhead Angle / Radius: 12° x 3/8'
- Margin: 0.075'
- Seat Width: 0.100'
- Top of Head: 7° Dish
- Weight / Grams: 138
Part TypeValve
BrandMANLEY
Package Height2.7
Package Width6.4
Package Length11.8
Weight2.8 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number11525-8
Package Qty1
Package TypeEA
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