991551 Thermostat Bypass 160°, MerCruiser, V6 & V8

Model

Serial Number Range(s)

4.3L (GEN +) (2 BBL.) GM 262 V6 - 4.3L (262 CU IN) V6 GM

0L010044-0M614999

4.3L EFI (GEN+) TBI GM 262 V6 - 4.3L (262 CU IN) V6 GM

0L012009-0M322780

4.3L MPI Alpha/Bravo - 4.3L (262 CU IN) V6 GM

0M300000-0M614999

4.3LH (GEN +) (4 BBL.) GM 262 V6 - 4.3L (262 CU IN) V6 GM

0L010044-0M614999

5.0L (2 BBL.) GM 305 V8 - 5.0L (305 CU IN) V8 GM

0L015751-0M599999

5.0L EFI GM 305 V8 - 5.0L (305 CU IN) V8 GM

0L012052-0M299999

5.0L MPI Alpha/Bravo - 5.0L (305 CU IN) V8 GM

0M300000-0M599999

350 MAG MPI Alpha/Bravo - 5.7L (350 CU IN) V8 GM

0L010019-0M599999

350 MAG MPI Horizon Alpha/Bravo - 5.7L (350 CU IN) V8 GM

0M300000-0M599999

350 MAG MPI Horizon MIE - 5.7L (350 CU IN) V8 GM

0L302200-0M316999

350 MAG MPI MIE - 5.7L (350 CU IN) V8 GM

0L302200-0M316999

350 MAG. MPI MIE (GEN+) GM 350 V8 - 5.7L (350 CU IN) V8 GM

0L002008-0L302199

5.7L (2 BBL.) GM 350 V8 - 5.7L (350 CU IN) V8 GM

0L010037-0M599999

5.7L CARB MIE - 5.7L (350 CU IN) V8 GM

0L002003-OM316999

5.7L EFI GM 350 V8 - 5.7L (350 CU IN) V8 GM

0L010035-0L339999

5.7L EFI GM 350 V8 - 5.7L (350 CU IN) V8 GM

0L325977-0M299999

5.7L EFI MIE GM 350 V8 - 5.7L (350 CU IN) V8 GM

0K040300-0K261160

MX 6.2L MPI Bravo - 6.2L (377 CU IN) V8 GM

0L680003-0M599999

MX 6.2L MPI Horizon Bravo - 6.2L (377 CU IN) V8 GM

0M300000-0M599999

MX 6.2L MPI Horizon MIE - 6.2L (377 CU IN) V8 GM

0M310000-0M316999

MX 6.2L MPI MIE - 6.2L (377 CU IN) V8 GM

0L302200-0M299999

MX 6.2L MPI MIE - 6.2L (377 CU IN) V8 GM

0M310000-0M316999

454 MAG MPI Bravo (GEN VI) GM 454 V8 - 7.4L (454 CU IN) V8 GM

0L010029-0M024999

454 MAG. MPI Horizon (GEN. VI) GM 454 V8 - 7.4L (454 CU IN) V8 GM

0L002200-0L674000

7.4L Bravo (MPI)(GEN. VI) GM 454 V8 - 7.4L (454 CU IN) V8 GM

0L010003-0M024330

7.4L MIE MPI (LH) GEN. VI GM 454 V8 - 7.4L (454 CU IN) V8 GM

0F820104-0K999999

7.4L MPI MIE (L29) GEN. VI GM 454 V8 - 7.4L (454 CU IN) V8 GM

0L002006-0L674613

7.4L TBI MIE (LH) GEN. VI GM 454 V8 - 7.4L (454 CU IN) V8 GM

0F874815-0K999999

502 MAG MPI Bravo (GEN VI) GM 502 V8 - 8.2L (502 CU IN) V8 GM

0L017000-0L085432

502 MAG. MPI Bravo (GEN VI) GM 502 V8 - 8.2L (502 CU IN) V8 GM

0L085433-0M024999

8.2L MIE MPI (GEN. VI) GM 502 V8 - 8.2L (502 CU IN) V8 GM

0L002450-0L674200

8.2L MIE MPI (LH) GEN. VI GM 502 V8 - 8.2L (502 CU IN) V8 GM

0F819620-0K999999