47+ 1991 GMC G3500 Mufflers & Resonators Rally STX Parts

Rally STX · Mufflers & Resonators (42 products)

Exact-fit parts for the 1991 GMC G3500 Rally STX.

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .094in HTG Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5897HTG

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .094in HTG Exhaust Manifold Gasket Set

$39.24

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in HTS Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5896HTS

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in HTS Exhaust Manifold Gasket Set

$32.70

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .092in MLS Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5897-092

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .092in MLS Exhaust Manifold Gasket Set

$87.22

Fel-Pro

Part # ES75102

Confirmed Fit

Fel-Pro Chevrolet K1500 ES 75102 Exhaust Flange Stud and Nut

$29.79

Cometic GM BBC 1.850 inch X 1.900 inch Port .30 inch MLS Exhaust Gasket

Cometic Gasket

Part # C5897-030

Confirmed Fit

Cometic GM BBC 1.850 inch X 1.900 inch Port .30 inch MLS Exhaust Gasket

$54.48

Magnaflow

Part # 94009

Confirmed Fit

MagnaFlow Conv Univ 3

$129.00

Fel-Pro

Part # ES75119

Confirmed Fit

Fel-Pro Chevrolet K1500 ES 75119 Exhaust Manifold Hardware Kit

$43.21

Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gasket Set-2.015in Round Port

Cometic Gasket

Part # C5349-030

Confirmed Fit

Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gasket Set-2.015in Round Port

$54.48

SoundFX Direct Fit Exhaust Muffler 3" Inlet (ID) 3" Outlet (ID)

Walker Exhaust

Part # 18229

Fits with Conditions

SoundFX Direct Fit Exhaust Muffler 3" Inlet (ID) 3" Outlet (ID)

$55.28

MAHLE Original Acura Cl 99-97 Exhaust Gas Recirculation Valve Gasket

Victor Reinz

Part # G31178

Confirmed Fit

MAHLE Original Acura Cl 99-97 Exhaust Gas Recirculation Valve Gasket

$14.46

Fel-Pro

Part # 60718

Confirmed Fit

Fel-Pro Chevrolet C1500 Exhaust Pipe Flange Gasket

$9.42

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .042in MLS Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5350-042

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .042in MLS Exhaust Manifold Gasket Set

$54.48

MAHLE Original Chevrolet B60 84-83 Exhaust Pipe Packing Ring

Victor Reinz

Part # F7269

Confirmed Fit

MAHLE Original Chevrolet B60 84-83 Exhaust Pipe Packing Ring

$22.09

Magnaflow

Part # 3391476

Confirmed Fit

Magnaflow 87-95 GM Truck 4.3/5.7 CA Direct Fit Converter

$995.00

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .064in AM Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5348

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .064in AM Exhaust Manifold Gasket Set

$46.58

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5896C

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket Set

$53.34

Cometic Chevy Mark-IV-GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gskt Set-2.130in Round Ports

Cometic Gasket

Part # C5996-030

Confirmed Fit

Cometic Chevy Mark-IV-GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gskt Set-2.130in Round Ports

$54.48

Cometic Chevrolet Big Block V8 .060in. HTS Exh Mani Gasket Set - 2.090in. x 2.090in. Square Ports

Cometic Gasket

Part # C15325HTS

Confirmed Fit

Cometic Chevrolet Big Block V8 .060in. HTS Exh Mani Gasket Set - 2.090in. x 2.090in. Square Ports

$35.97

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in MLS Exhaust Manifold Gasket Set

Cometic Gasket

Part # C5897-060

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in MLS Exhaust Manifold Gasket Set

$85.52

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket

Cometic Gasket

Part # C5897C

Confirmed Fit

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket

$53.34

Frequently Asked Questions

Do these parts fit my 1991 GMC G3500 Rally STX?

This page groups parts listed for the 1991 GMC G3500 Rally STX. 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 mufflers & resonators options are available for my 1991 GMC G3500 Rally STX?

We offer a wide selection of mufflers & resonators parts for the 1991 GMC G3500 Rally STX. 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 G3500 Rally STX?

We carry parts from trusted brands including Cometic Gasket, Fel-Pro, Magnaflow, Victor Reinz, and Walker Exhaust, plus many more. Filter by brand to find your preferred manufacturer.

How fast do 1991 GMC G3500 Rally STX 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 G3500 Rally STX 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 G3500(4,033 parts)

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Other GMC G3500 Years

1991 GMC G3500(4,033 parts)

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Other GMC G3500 Years

Rally STX · Mufflers & Resonators (42 products)

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .094in HTG Exhaust Manifold Gasket Set

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in HTS Exhaust Manifold Gasket Set

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .092in MLS Exhaust Manifold Gasket Set

Fel-Pro Chevrolet K1500 ES 75102 Exhaust Flange Stud and Nut

Cometic GM BBC 1.850 inch X 1.900 inch Port .30 inch MLS Exhaust Gasket

MagnaFlow Conv Univ 3

Fel-Pro Chevrolet K1500 ES 75119 Exhaust Manifold Hardware Kit

Cometic Chevy Mark-IV GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gasket Set-2.015in Round Port

SoundFX Direct Fit Exhaust Muffler 3" Inlet (ID) 3" Outlet (ID)

MAHLE Original Acura Cl 99-97 Exhaust Gas Recirculation Valve Gasket

Fel-Pro Chevrolet C1500 Exhaust Pipe Flange Gasket

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .042in MLS Exhaust Manifold Gasket Set

MAHLE Original Chevrolet B60 84-83 Exhaust Pipe Packing Ring

Magnaflow 87-95 GM Truck 4.3/5.7 CA Direct Fit Converter

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .064in AM Exhaust Manifold Gasket Set

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket Set

Cometic Chevy Mark-IV-GM Gen-V/VI Big Block V8 .030in MLS Exhaust Mani Gskt Set-2.130in Round Ports

Cometic Chevrolet Big Block V8 .060in. HTS Exh Mani Gasket Set - 2.090in. x 2.090in. Square Ports

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .060in MLS Exhaust Manifold Gasket Set

Cometic Chevrolet Mark-IV GM Gen-V/VI Big Block V8 .043in Copper Exhaust Manifold Gasket

Frequently Asked Questions

Do these parts fit my 1991 GMC G3500 Rally STX?

What mufflers & resonators options are available for my 1991 GMC G3500 Rally STX?

What brands make parts for the 1991 GMC G3500 Rally STX?

How fast do 1991 GMC G3500 Rally STX parts ship?

What warranty do your 1991 GMC G3500 Rally STX parts come with?