New Product

Enginetech SK5091 SBC 350 Rear Main Seal, Viton, w/ Housing Gskt

New Product

#17300671

Enginetech SK5091 SBC 350 Rear Main Seal, Viton, w/ Housing Gskt

Fits 1985-1997 Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac applications
Engine applications: 4.3L V6, 4.3L/5.0L/5.7L V8
Viton; With rear housing gasket; 1 piece Offset lip

$14.16

/each

Factory Shipped

Quantity

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Product Summary

Fits 1985-1997 Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac applications
Engine applications: 4.3L V6, 4.3L/5.0L/5.7L V8
Viton; With rear housing gasket; 1 piece Offset lip
Superior design and materials of seals

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Key Specs

MFG. Part #	SK5091
Brand	Enginetech

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Need To Know

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855.313.9176

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Quick and Easy Returns

Return Policy

Enginetech SK5091 Details

SBC 350 Rear Main Seal, Viton, w/ Housing Gskt for 5.7L 350ci V8 applications — Chevrolet, GMC, Pontiac, 1985-1997. Check the fitment listing for the full vehicle coverage before ordering.

Features:

Consolidated sets save you money
Designed specifically for the engine rebuilder
Simple part numbering system
Superior design and materials of seals
Superior packaging helps you stay organized

About Enginetech: Family owned and operated since 1982, Enginetech is the Engine Builder’s source for high quality engine parts. Enginetech offers a complete line of products for virtually every engine, including import and domestic engines. Our product line includes complete engine kits as well as individual components to suit your needs. We offer nationwide distribution, and incredible customer service. Enginetech parts are engineered specifically for the engine rebuilder. We treat our customers as we ourselves would want to be treated, and we are passionate about going above and

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CA Prop 65

CARB warning

Enginetech SK5091 Specifications

KEY SPECS
MFG. Part #	SK5091
Brand	Enginetech

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Questions & Answers

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Fitment

1991-1993 Buick Roadmaster

Gen 1 L03 Small Block Chevy

1994 Buick Roadmaster

Gen 1 L05 Small Block Chevy

1991-1992 Cadillac Brougham

1-Piece Rear Main 305 LB9

1990-1992 Cadillac Fleetwood

Gen 1 L05 Small Block Chevy

1986-1995 Chevy Astro

Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy Astro

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-2005 Chevy Astro

Vortec L35 90-Degree Chevy

1987 Chevy Blazer

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1994 Chevy Blazer

Gen 1 L05 Small Block Chevy

1995 Chevy Blazer

Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy Blazer

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-2002 Chevy Blazer

Vortec L35 90-Degree Chevy

2003-2005 Chevy Blazer

Vortec LU3 90-Degree Chevy

1976-1985 Chevy C10

Gen 1 LG3 Small Block Chevy

1986 Chevy C10

1-Piece Rear Main 305 LG4
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Gen 1 LG3 Small Block Chevy

1976-1982 Chevy C10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1982-1987 Chevy C15

Gen 1 LE9 Small Block Chevy

1988 Chevy C15

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1988-1995 Chevy C1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996 Chevy C1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Vortec L35 90-Degree Chevy

1997 Chevy C1500

Gen 1 L05 Small Block Chevy
Vortec L35 90-Degree Chevy

1998-1999 Chevy C1500

Gen 1 L05 Small Block Chevy

2000-2002 Chevy C1500

Vortec LG3 90-Degree Chevy

1992-1999 Chevy C1500 Suburban

Gen 1 L05 Small Block Chevy

1977-1982 Chevy C20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy C20

2-Piece Rear Main 305 LG4

1986 Chevy C20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987 Chevy C20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1976-1978 Chevy C20 Suburban

Gen 1 LG3 Small Block Chevy

1979-1985 Chevy C20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy C20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy C2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996 Chevy C2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1997-1999 Chevy C2500

Gen 1 L05 Small Block Chevy

1992-1999 Chevy C2500 Suburban

Gen 1 L05 Small Block Chevy

1978-1979 Chevy C30

Gen 1 LG3 Small Block Chevy

1986 Chevy C30

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1999 Chevy C35

Gen 1 L05 Small Block Chevy

1988-1999 Chevy C3500

Gen 1 L05 Small Block Chevy

1976-1982 Chevy Camaro

Gen 1 LG3 Small Block Chevy

1983-1984 Chevy Camaro

2-Piece Rear Main 305 LG4

1985 Chevy Camaro

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy

1986 Chevy Camaro

1-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4

1987-1992 Chevy Camaro

1-Piece Rear Main 305 LB9
Gen 1 L98 Small Block Chevy

1977 Chevy Caprice

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Caprice

2-Piece Rear Main 305 LG4

1986 Chevy Caprice

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987-1990 Chevy Caprice

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1991 Chevy Caprice

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1992-1993 Chevy Caprice

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1980 Chevy Corvette

Gen 1 LG3 Small Block Chevy

1986-1991 Chevy Corvette

Gen 1 L98 Small Block Chevy

1976-1982 Chevy El Camino

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy El Camino

2-Piece Rear Main 305 LG4

1986 Chevy El Camino

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987 Chevy El Camino

Gen 1 L03 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy Express 1500

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-1999 Chevy Express 1500

Gen 1 L05 Small Block Chevy

1996 Chevy Express 2500

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1997 Chevy Express 2500

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-1999 Chevy Express 2500

Gen 1 L05 Small Block Chevy

1996-1999 Chevy Express 3500

Gen 1 L05 Small Block Chevy

1977-1982 Chevy G10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G10

2-Piece Rear Main 305 LG4

1986 Chevy G10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987-1993 Chevy G10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1994-1995 Chevy G10

Gen 1 L03 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1977-1982 Chevy G20

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy G20

2-Piece Rear Main 305 LG4

1986 Chevy G20

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987-1995 Chevy G20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1978-1979 Chevy G30

Gen 1 LG3 Small Block Chevy

1982 Chevy G30

Gen 1 LG3 Small Block Chevy

1985 Chevy G30

2-Piece Rear Main 305 LG4

1986-1995 Chevy G30

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996 Chevy G30

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1977-1982 Chevy Impala

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy Impala

2-Piece Rear Main 305 LG4

1977-1979 Chevy K10

Gen 1 LG3 Small Block Chevy

1981-1982 Chevy K10

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10

2-Piece Rear Main 305 LG4

1986 Chevy K10

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1976-1982 Chevy K10 Suburban

Gen 1 LG3 Small Block Chevy

1983-1985 Chevy K10 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K10 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy K1500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy K1500

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-1999 Chevy K1500

Gen 1 L05 Small Block Chevy

1992-1999 Chevy K1500 Suburban

Gen 1 L05 Small Block Chevy

1977-1978 Chevy K20

Gen 1 LG3 Small Block Chevy

1980 Chevy K20

Gen 1 LG3 Small Block Chevy

1985 Chevy K20

2-Piece Rear Main 305 LG4

1986 Chevy K20

Gen 1 L05 Small Block Chevy

1977-1978 Chevy K20 Suburban

Gen 1 LG3 Small Block Chevy

1985 Chevy K20 Suburban

2-Piece Rear Main 305 LG4

1986 Chevy K20 Suburban

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988-1995 Chevy K2500

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996-1999 Chevy K2500

Gen 1 L05 Small Block Chevy

1992-1999 Chevy K2500 Suburban

Gen 1 L05 Small Block Chevy

1986 Chevy K30

Gen 1 L05 Small Block Chevy

1988-1999 Chevy K3500

Gen 1 L05 Small Block Chevy

1977-1981 Chevy K5 Blazer

Gen 1 LG3 Small Block Chevy

1982-1985 Chevy K5 Blazer

2-Piece Rear Main 305 LG4

1986 Chevy K5 Blazer

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1976 Chevy Laguna

Gen 1 LG3 Small Block Chevy

1976-1982 Chevy Malibu

Gen 1 LG3 Small Block Chevy

1983 Chevy Malibu

2-Piece Rear Main 305 LG4

1976-1977 Chevy Monte Carlo

Gen 1 LG3 Small Block Chevy

1978-1985 Chevy Monte Carlo

2-Piece Rear Main 305 LG4

1986 Chevy Monte Carlo

2-Piece Rear Main 305 LG4
Gen 1 L03 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987-1988 Chevy Monte Carlo

Gen 1 L03 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1976-1979 Chevy Monza

Gen 1 LG3 Small Block Chevy

1976-1979 Chevy Nova

Gen 1 LG3 Small Block Chevy

1986-1989 Chevy P30

Gen 1 L05 Small Block Chevy

1990-1995 Chevy P30

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy P30

Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-1999 Chevy P30

Gen 1 L05 Small Block Chevy

1987 Chevy R10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987 Chevy R10 Suburban

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy

1988 Chevy R10 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R1500 Suburban

Gen 1 L05 Small Block Chevy

1987 Chevy R20

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1988 Chevy R20

Gen 1 L05 Small Block Chevy

1987-1988 Chevy R20 Suburban

Gen 1 L05 Small Block Chevy

1995-1999 Chevy R25

Gen 1 L05 Small Block Chevy

1989 Chevy R2500

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R2500 Suburban

Gen 1 L05 Small Block Chevy

1987-1988 Chevy R30

Gen 1 L05 Small Block Chevy

1989-1991 Chevy R3500

Gen 1 L05 Small Block Chevy

1988-1995 Chevy S10

Gen 1 LB4 90-Degree Chevy

1996-1997 Chevy S10

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-2004 Chevy S10

Gen 1 LB4 90-Degree Chevy

1988-1994 Chevy S10 Blazer

Gen 1 LB4 90-Degree Chevy

1995-1999 Chevy Silverado

Gen 1 L05 Small Block Chevy

2000-2011 Chevy Silverado 1500

Vortec L35 90-Degree Chevy

1987-1994 Chevy Suburban

Gen 1 L05 Small Block Chevy

1995-1999 Chevy Suburban 1500

Gen 1 L05 Small Block Chevy

1995-1999 Chevy Tahoe

Gen 1 L05 Small Block Chevy

1987 Chevy V10

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 LB4 90-Degree Chevy

1987-1988 Chevy V10 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V1500 Suburban

Gen 1 L05 Small Block Chevy

1987 Chevy V20

Gen 1 L05 Small Block Chevy

1987-1988 Chevy V20 Suburban

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V2500 Suburban

Gen 1 L05 Small Block Chevy

1987-1988 Chevy V30

Gen 1 L05 Small Block Chevy

1989-1991 Chevy V3500

Gen 1 L05 Small Block Chevy

1963-1965 GMC 1000 Series

Gen 1 LE9 Small Block Chevy

1986 GMC C1500

Gen 1 LB4 90-Degree Chevy

1988-1995 GMC C1500

Gen 1 LB4 90-Degree Chevy

1996-1997 GMC C1500

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1986 GMC C2500

Gen 1 LB4 90-Degree Chevy

1988-1995 GMC C2500

Gen 1 LB4 90-Degree Chevy

1987-1995 GMC G1500

Gen 1 L05 Small Block Chevy

1987-1995 GMC G2500

Gen 1 L05 Small Block Chevy

1987-1994 GMC G3500

Gen 1 L05 Small Block Chevy

1995-1996 GMC G3500

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1970-1973 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1978-1982 GMC Jimmy

Gen 1 LE9 Small Block Chevy

1986 GMC Jimmy

Gen 1 L05 Small Block Chevy

1987 GMC Jimmy

Gen 1 L03 Small Block Chevy
Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1988-1990 GMC Jimmy

Gen 1 L05 Small Block Chevy

1991-1994 GMC Jimmy

Gen 1 LB4 90-Degree Chevy

1995-2001 GMC Jimmy

Vortec L35 90-Degree Chevy

1986 GMC K1500

Gen 1 LB4 90-Degree Chevy

1988-1995 GMC K1500

Gen 1 LB4 90-Degree Chevy

1996-1997 GMC K1500

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1981-1986 GMC K1500 Suburban

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1986 GMC K2500

Gen 1 L05 Small Block Chevy

1988-1995 GMC K2500

Gen 1 LB4 90-Degree Chevy

1992-1993 GMC K2500 Suburban

Gen 1 L05 Small Block Chevy

1987 GMC R1500

Gen 1 LB4 90-Degree Chevy

1988-1991 GMC R1500 Suburban

Gen 1 L98 Small Block Chevy

1987 GMC R2500

Gen 1 LB4 90-Degree Chevy

1983-1985 GMC S15

Vortec LU2 90-Degree Chevy

1988-1990 GMC S15

Gen 1 LB4 90-Degree Chevy

1983-1984 GMC S15 Jimmy

Vortec LU2 90-Degree Chevy

1987 GMC S15 Jimmy

Vortec LU2 90-Degree Chevy

1988-1990 GMC S15 Jimmy

Gen 1 LB4 90-Degree Chevy

1991 GMC S15 Jimmy

Vortec LU2 90-Degree Chevy

1986-1995 GMC Safari

Gen 1 LB4 90-Degree Chevy

1996-1997 GMC Safari

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-2005 GMC Safari

Vortec LU3 90-Degree Chevy

2001-2005 GMC Savana 1500

Vortec L35 90-Degree Chevy

2006 GMC Savana 1500

Vortec L35 90-Degree Chevy
Vortec LU3 90-Degree Chevy

2007-2014 GMC Savana 1500

Vortec LU3 90-Degree Chevy

2001-2005 GMC Savana 2500

Vortec L35 90-Degree Chevy

2006-2013 GMC Savana 2500

Vortec LU3 90-Degree Chevy

2002-2005 GMC Savana 3500

Vortec L35 90-Degree Chevy

2006-2013 GMC Savana 3500

Vortec LU3 90-Degree Chevy

2007 GMC Sierra 1500 Classic

Vortec LU3 90-Degree Chevy

1991-1995 GMC Sonoma

Gen 1 LB4 90-Degree Chevy

1996-1997 GMC Sonoma

Gen 1 LB4 90-Degree Chevy
Vortec L35 90-Degree Chevy

1998-2004 GMC Sonoma

Gen 1 LB4 90-Degree Chevy

1960-1966 GMC Suburban

Gen 1 L69 Small Block Chevy

1991 GMC Syclone

Gen 1 LB4 90-Degree Chevy

1992-1993 GMC Typhoon

Gen 1 LB4 90-Degree Chevy

1987 GMC V1500

Gen 1 LB4 90-Degree Chevy

1987-1991 GMC V1500 Suburban

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1987 GMC V2500

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1987-1991 GMC V2500 Suburban

Gen 1 L05 Small Block Chevy
Gen 1 L98 Small Block Chevy

1991-1994 Oldsmobile Bravada

Vortec LU2 90-Degree Chevy

1996-2001 Oldsmobile Bravada

Vortec L35 90-Degree Chevy

1975-1977 Oldsmobile Starfire

305 Chevy Small Block V8

1985 Pontiac Firebird

2-Piece Rear Main 305 LB9
2-Piece Rear Main 305 LG4
Gen 1 L69 Small Block Chevy