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Vehicle Info NeededENGINETECHPART NUMBER: 416-ST15621N
ST15621N Valve Seat Set for 1963-2013 Chevrolet 4.3L, 4.8L, 5.0L, 5.7L
$4699
Ships on 09/14/2026
Lowest Price GuaranteeGM
Valve Seat Set1963-2013 Chevrolet 4.3L, 4.8L, 5.0L, 5.7L See Fitment Tab for All Applications Standard Valve Seats Set of 4
The Enginetech ST15621N is a valve seat set for SEAT (4) 1.313 1.5670 .2188" HD NICKEL/COBALT engines. High chrome construction resists wear and seats valves precisely for efficient combustion chamber sealing.
Enginetech ST15621N Valve Seat Set Features:
- Fitment: SEAT (4) 1.313 1.5670 .2188" HD NICKEL/COBALT
- Engineered to OE specifications for direct replacement
- Note: Exhaust. 1.3125 x 1.5642 x .2188. 45 Deg. Nickel base cast. With 1.500 - 1.530 valve head diameter. (4 pack). Except Exhaust. LPG.
Part TypeValve Spring Seat
BrandENGINETECH
Package Height1.25
Package Width3.25
Package Length5.25
Weight0.25 PG
Part CategoryReplacement Parts
QuantitySet of 4
FitmentSEAT (4) 1.313 1.5670 .2188" HD NICKEL/COBALT
MaterialNickel/Cobalt
Part FitmentDirect Fit
RemanufacturedNo
Outside Diameter1.5670
Seat Angle45
Vendor Part NumberST15621N
Package Qty1
Package TypeEA
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