Flowtech Replacement Header Gasket Sets 99161FLT

Flowtech Replacement Header Gasket Sets 99161FLT

BIG-99161FLT

4.75 out of 5 stars ( 26 )

Part Number: BIG-99161FLT

Estimated Ship Date: Monday 10/19/2026

$19.24

$21.38

(Save $2.14)

Results Found: 42

Make:
GMC
Model:
C25
Submodel:
BASE
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C25
Submodel:
HIGH SIERRA
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C25
Submodel:
SIERRA CLASSIC
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C25
Submodel:
SIERRA GRANDE
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C35
Submodel:
BASE
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C35
Submodel:
HIGH SIERRA
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C35
Submodel:
SIERRA CLASSIC
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
C35
Submodel:
SIERRA GRANDE
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G25
Submodel:
RALLY
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G25
Submodel:
RALLY STX
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G25
Submodel:
VANDURA
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
MAGNAVAN
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
RALLY
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
RALLY CAMPER SPECIAL
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
RALLY STX
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
VANDURA
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
G35
Submodel:
VANDURA SPECIAL
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
JIMMY
Submodel:
BASE
Beginning Year:
1977
Ending Year:
1979
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
JIMMY
Submodel:
HIGH SIERRA
Beginning Year:
1977
Ending Year:
1979
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
JIMMY
Submodel:
SIERRA CLASSIC
Beginning Year:
1977
Ending Year:
1979
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
JIMMY
Submodel:
SIERRA GRANDE
Beginning Year:
1977
Ending Year:
1979
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
K15
Submodel:
BASE
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
K15
Submodel:
HIGH SIERRA
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
K15
Submodel:
INDY HAULER
Beginning Year:
1977
Ending Year:
1977
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA
Make:
GMC
Model:
K15
Submodel:
SIERRA CLASSIC
Beginning Year:
1977
Ending Year:
1978
Engine Type:
V8
Liter:
6.6
CID:
400
Engine Family:
Chevy small block Gen I
Engine Size:
6.6L/400
Application Notes:
Ferroglass Non-Asbestos Material, Header Gasket Set, Incl. 1 Pair Head Flange Gaskets, 1 Pair Exhaust Collector Gaskets, Full Length.
Engine VIN Code:
R
Region:
USA