Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1977

Ending Year:

1977

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

BASE

Beginning Year:

1978

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1977

Ending Year:

1977

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

HIGH SIERRA

Beginning Year:

1978

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

SIERRA CLASSIC

Beginning Year:

1977

Ending Year:

1977

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

SIERRA CLASSIC

Beginning Year:

1978

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

SIERRA GRANDE

Beginning Year:

1977

Ending Year:

1977

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA

Make:

GMC

Model:

K25

Submodel:

SIERRA GRANDE

Beginning Year:

1978

Ending Year:

1978

Engine Type:

V8

Liter:

5.0

CID:

305

Engine Size:

5.0L/305

Engine Family:

Chevy small block Gen I

Application Notes:

Fail-Safe; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; "The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating.", "The patented Fail-Safe (R) thermostat is the only thermostat on the mar

Engine VIN Code:

U

Region:

USA