Order Status & Returns
Gift Cards
Help Center
1-800-345-4545
Vehicle Info NeededMANLEYPART NUMBER: 660-11503-1
Severe Duty Exhaust Valve Buick V6 3.8L Turbo Stage 1 / Production Cast Iron Heads
$3061
Ships on 09/15/2026
Lowest Price GuaranteeExhaust Valves
- Severe Duty Exhaust Valve
- Buick V6 3.8L Turbo Stage 1 / Production Cast Iron Heads
- 1.500'' Diameter
- 11/32'' (0.3415'') Stem Diameter
- 4.725'' Overall Length (Stock)
- Stainless Steel
- 1/pkg.
- Type: Exhaust Valve XH-428 Material
- Head Diameter: 1.500'
- Stem Diameter: 11/32' / 0.3415'
- Installed Height: Stock
- Overall Length: 4.725'
- Tip Length: 0.270'
- Underhead Angle / Radius: 30° x 7/16'
- Margin: 0.075'
- Seat Width: 0.090'
- Top of Head: 20° Dish
- Weight / Grams: 98
Part TypeValve
BrandMANLEY
Package Height2.5
Package Width2.6
Package Length7.0
Weight0.3 PG
Vendor Part Number11503-1
Package Qty1
Package TypeEA
No Questions
No Reviews
Items You Need
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80521.jpg)
![Valve Spring Compressor [Stud Mount]](https://www.jegs.com/images/mini_200/500/555/555-80518.jpg)
Some parts are not legal for use in California or other states with similar laws / regulations
