20-2125-31 | QualCast Valve Seat Insert
Applications:
- GM Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- GM Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, 210, 215, 225, 230, 235, 245 models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- GM Marine: All years, all models with 350 C.I. (5.7L) GM Marine 16V Engine
- Mercury Marine: All years, all models with350 C.I. (5.7L) GM Marine 16V Engine
Interchange:
- Dynagear: Part #32430
- Martin Wells Ind.: Part #W2346
- SBI, Inc.: Part #SB212531
- Tucker: Part #T389
Product Information
Product Information
Shipping & Returns
Shipping & Returns

20-2125-31 | QualCast Valve Seat Insert
20-2125-31 | QualCast Valve Seat Insert
Applications:
- GM Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- GM Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, 210, 215, 225, 230, 235, 245 models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- GM Marine: All years, all models with 350 C.I. (5.7L) GM Marine 16V Engine
- Mercury Marine: All years, all models with350 C.I. (5.7L) GM Marine 16V Engine
Interchange:
- Dynagear: Part #32430
- Martin Wells Ind.: Part #W2346
- SBI, Inc.: Part #SB212531
- Tucker: Part #T389
$1.04
Original: $3.47
-70%20-2125-31 | QualCast Valve Seat Insert—
$3.47
$1.04Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Applications:
- GM Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- Mercury Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, 140 model with 181 C.I. (3.0L) GM Marine 8V Engine
- OMC Marine: All years, all models with 181 C.I. (3.0L) GM Marine 8V Engine
- GM Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, 210, 215, 225, 230, 235, 245 models with 307 C.I. (5.0L) GM Marine 16V Engine
- OMC Marine: All years, all models with 307 C.I. (5.0L) GM Marine 16V Engine
- GM Marine: All years, all models with 350 C.I. (5.7L) GM Marine 16V Engine
- Mercury Marine: All years, all models with350 C.I. (5.7L) GM Marine 16V Engine
Interchange:
- Dynagear: Part #32430
- Martin Wells Ind.: Part #W2346
- SBI, Inc.: Part #SB212531
- Tucker: Part #T389












