57+ 1991 GMC K1500 Exhaust Systems Sierra Parts - Page 2

Sierra · Exhaust Systems (57 products)

Exact-fit parts for the 1991 GMC K1500 Sierra.

Flanged Vented CW Blower Motor w/o Wheel

Four Seasons

Part # 35472

Fits with Conditions

Flanged Vented CW Blower Motor w/o Wheel

$40.35

DEI 88-98 Chevrolet/GMC C/K Extended Cab 12mm D-Mat Roof Insulation Kit

DEI

Part # 50299

Confirmed Fit

DEI 88-98 Chevrolet/GMC C/K Extended Cab 12mm D-Mat Roof Insulation Kit

$34.69

Standard Motor Products

Part # AT163

Fits with Conditions

MANIFOLD AIR TUBE

$38.60

Exhaust Pipe 3" Inlet (ID) 3" Outlet (OD)

Walker Exhaust

Part # 45344

Fits with Conditions

Exhaust Pipe 3" Inlet (ID) 3" Outlet (OD)

$71.59

Walker Exhaust

Part # 31398

Fits with Conditions

Exhaust Pipe Flange Gasket

$15.13

Standard Motor Products

Part # S-554

Fits with Conditions

Oxygen Sensor Connector

$15.83

Standard Motor Products

Part # FJG101

Fits with Conditions

Throttle Body Injection Flange Gasket

$8.29

AP Exhaust

Part # H212

Fits with Conditions

Exhaust Clamp

$6.71

AP Exhaust

Part # 9206

Fits with Conditions

Exhaust Heat Shield

$26.11

Exhaust Pipe 2.5" Inlet (ID) 2.5" Outlet (OD)

Walker Exhaust

Part # 43297

Fits with Conditions

Exhaust Pipe 2.5" Inlet (ID) 2.5" Outlet (OD)

$21.71

Manifold Stud and Spring Kit - M10-1.5 x 77mm

Dorman

Part # 03107

Fits with Conditions

Manifold Stud and Spring Kit - M10-1.5 x 77mm

$10.05

Walker Exhaust

Part # 43661

Fits with Conditions

Exhaust Pipe

$27.08

AP Exhaust

Part # H300

Fits with Conditions

Exhaust Clamp

$9.10

Walker Exhaust

Part # 35335

Fits with Conditions

Exhaust Clamp

$5.69

Walker Exhaust

Part # 40296

Fits with Conditions

Exhaust Y Pipe 2.5" Outlet (OD)

$78.96

Delphi

Part # ES10966

Fits with Conditions

Oxygen Sensor

$21.41

Standard EPA Direct Fit Catalytic Converter 3" Inlet (ID) 3" Outlet (OD)

Walker Exhaust

Part # 15693

Fits with Conditions

Standard EPA Direct Fit Catalytic Converter 3" Inlet (ID) 3" Outlet (OD)

$195.52

AP Exhaust

Part # 8214

Fits with Conditions

Exhaust Bracket

$8.28

Exhaust Pipe 3" Inlet (ID) 2.5" Outlet (OD)

Walker Exhaust

Part # 43295

Fits with Conditions

Exhaust Pipe 3" Inlet (ID) 2.5" Outlet (OD)

$19.26

Walker Exhaust

Part # 53068

Fits with Conditions

Exhaust Tail Pipe

$30.78

Frequently Asked Questions

Do these parts fit my 1991 GMC K1500 Sierra?

This page groups parts listed for the 1991 GMC K1500 Sierra. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.

What exhaust systems options are available for my 1991 GMC K1500 Sierra?

We offer a wide selection of exhaust systems parts for the 1991 GMC K1500 Sierra. This page narrows the catalog to the year, make, and model; use your trim on product pages to confirm exact fit when a part only fits certain submodels.

What brands make parts for the 1991 GMC K1500 Sierra?

We carry parts from trusted brands including Walker Exhaust, AP Exhaust, Standard Motor Products, Kooks Headers, and Eastern Catalytic, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 1991 GMC K1500 Sierra parts ship?

Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.

What warranty do your 1991 GMC K1500 Sierra parts come with?

Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.

1991 GMC K1500(4,386 parts)

1991 GMC K1500(4,386 parts)

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Other GMC K1500 Years

Sierra · Exhaust Systems (57 products)

Flanged Vented CW Blower Motor w/o Wheel

DEI 88-98 Chevrolet/GMC C/K Extended Cab 12mm D-Mat Roof Insulation Kit

MANIFOLD AIR TUBE

Exhaust Pipe 3" Inlet (ID) 3" Outlet (OD)

Exhaust Pipe Flange Gasket

Oxygen Sensor Connector

Throttle Body Injection Flange Gasket

Exhaust Clamp

Exhaust Heat Shield

Exhaust Pipe 2.5" Inlet (ID) 2.5" Outlet (OD)

Manifold Stud and Spring Kit - M10-1.5 x 77mm

Exhaust Pipe

Exhaust Clamp

Exhaust Clamp

Exhaust Y Pipe 2.5" Outlet (OD)

Oxygen Sensor

Standard EPA Direct Fit Catalytic Converter 3" Inlet (ID) 3" Outlet (OD)

Exhaust Bracket

Exhaust Pipe 3" Inlet (ID) 2.5" Outlet (OD)

Exhaust Tail Pipe

Frequently Asked Questions

Do these parts fit my 1991 GMC K1500 Sierra?

What exhaust systems options are available for my 1991 GMC K1500 Sierra?

What brands make parts for the 1991 GMC K1500 Sierra?

How fast do 1991 GMC K1500 Sierra parts ship?

What warranty do your 1991 GMC K1500 Sierra parts come with?