55+ 1986 GMC K1500 Mufflers & Resonators High Sierra Parts

High Sierra · Mufflers & Resonators (55 products)

Exact-fit parts for the 1986 GMC K1500 High Sierra.

Cometic Chevy Gen1 SB V8 .030in MLS Exhaust Mani Gskt Set-1.780in x 1.700in D Ports-Brodix 12B Head

Cometic Gasket

Part # C5927-030

Confirmed Fit

Cometic Chevy Gen1 SB V8 .030in MLS Exhaust Mani Gskt Set-1.780in x 1.700in D Ports-Brodix 12B Head

$53.34

Cometic Chevy Gen1 Small Block V8 .094in HTG Exhaust Mani Gasket Set-1.480in x 1.450in Square Ports

Cometic Gasket

Part # C15190HTG

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .094in HTG Exhaust Mani Gasket Set-1.480in x 1.450in Square Ports

$41.37

Cometic Chevy Gen1 Small Block V8 .064in AM Exhaust Manifold Gskt Set-1.480in x 1.450in Square Ports

Cometic Gasket

Part # C15190AM

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .064in AM Exhaust Manifold Gskt Set-1.480in x 1.450in Square Ports

$45.76

Magnaflow

Part # 94016

Confirmed Fit

MagnaFlow Conv Univ 2.5 W/Air FED

$137.00

Fel-Pro

Part # ES75102

Confirmed Fit

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

$29.79

Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD)

Walker Exhaust

Part # 22329

Fits with Conditions

Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD)

$68.92

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gskt Set-Brodix Race-Rite Heads

Cometic Gasket

Part # C5417-064

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gskt Set-Brodix Race-Rite Heads

$30.81

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.480in x 1.450in Square Ports

Cometic Gasket

Part # C15190C

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.480in x 1.450in Square Ports

$53.34

Cometic Chevy Gen1 Small Block V8 .030in MLS Exhaust Mani Gasket Set

Cometic Gasket

Part # C5928-030

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .030in MLS Exhaust Mani Gasket Set

$53.34

SoundFX Universal Universal Exhaust Muffler 2" Inlet (OD) 2.5" Outlet (ID)

Walker Exhaust

Part # 18171

Fits with Conditions

SoundFX Universal Universal Exhaust Muffler 2" Inlet (OD) 2.5" Outlet (ID)

$41.55

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Manifold Gasket Set-1.55in x 1.55in Square Port

Cometic Gasket

Part # C15611-060

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Manifold Gasket Set-1.55in x 1.55in Square Port

$36.26

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set-Brodix GB 2000 Heads

Cometic Gasket

Part # C5422-064

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set-Brodix GB 2000 Heads

$30.81

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

Cometic Chevy Gen1 SB V8 .064in AM Exhaust Mani Gskt Set-1.615in x 1.500in D Ports-Brodix WP262 Head

Cometic Gasket

Part # C5315

Confirmed Fit

Cometic Chevy Gen1 SB V8 .064in AM Exhaust Mani Gskt Set-1.615in x 1.500in D Ports-Brodix WP262 Head

$45.34

Cometic Chevrolet Gen-1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set - 23 Degree Head

Cometic Gasket

Part # C5548-064

Confirmed Fit

Cometic Chevrolet Gen-1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set - 23 Degree Head

$32.31

Cometic Chevy Gen1 SB V8 .064in ArmorCore Exhaust Mani Gasket Set-1.810in Round Port

Cometic Gasket

Part # C5126-064

Confirmed Fit

Cometic Chevy Gen1 SB V8 .064in ArmorCore Exhaust Mani Gasket Set-1.810in Round Port

$45.34

Fel-Pro

Part # 9587

Confirmed Fit

Fel-Pro Chevrolet C10 Exhaust Pipe Flange Gasket

$2.24

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Mani Gasket Set-1.550in x 1.450in Square Ports

Cometic Gasket

Part # C15189HTS

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Mani Gasket Set-1.550in x 1.450in Square Ports

$33.09

MAHLE Original Buick Century 80-77 Exhaust Gas Recirculation Valve Gasket

Victor Reinz

Part # G26748

Confirmed Fit

MAHLE Original Buick Century 80-77 Exhaust Gas Recirculation Valve Gasket

$15.67

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.550in x 1.450in Square Ports

Cometic Gasket

Part # C15189C

Confirmed Fit

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.550in x 1.450in Square Ports

$53.34

Frequently Asked Questions

Do these parts fit my 1986 GMC K1500 High Sierra?

This page groups parts listed for the 1986 GMC K1500 High 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 mufflers & resonators options are available for my 1986 GMC K1500 High Sierra?

We offer a wide selection of mufflers & resonators parts for the 1986 GMC K1500 High 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 1986 GMC K1500 High Sierra?

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 1986 GMC K1500 High 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 1986 GMC K1500 High 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.

1986 GMC K1500(4,322 parts)

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Other GMC K1500 Years

1986 GMC K1500(4,322 parts)

Shop by Problem

Other GMC K1500 Years

High Sierra · Mufflers & Resonators (55 products)

Cometic Chevy Gen1 SB V8 .030in MLS Exhaust Mani Gskt Set-1.780in x 1.700in D Ports-Brodix 12B Head

Cometic Chevy Gen1 Small Block V8 .094in HTG Exhaust Mani Gasket Set-1.480in x 1.450in Square Ports

Cometic Chevy Gen1 Small Block V8 .064in AM Exhaust Manifold Gskt Set-1.480in x 1.450in Square Ports

MagnaFlow Conv Univ 2.5 W/Air FED

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

Quiet-Flow SS Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2.25" Outlet (OD)

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gskt Set-Brodix Race-Rite Heads

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.480in x 1.450in Square Ports

Cometic Chevy Gen1 Small Block V8 .030in MLS Exhaust Mani Gasket Set

SoundFX Universal Universal Exhaust Muffler 2" Inlet (OD) 2.5" Outlet (ID)

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Manifold Gasket Set-1.55in x 1.55in Square Port

Cometic Chevy Gen1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set-Brodix GB 2000 Heads

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

Cometic Chevy Gen1 SB V8 .064in AM Exhaust Mani Gskt Set-1.615in x 1.500in D Ports-Brodix WP262 Head

Cometic Chevrolet Gen-1 Small Block V8 .064in ArmorCore Exhaust Manifold Gasket Set - 23 Degree Head

Cometic Chevy Gen1 SB V8 .064in ArmorCore Exhaust Mani Gasket Set-1.810in Round Port

Fel-Pro Chevrolet C10 Exhaust Pipe Flange Gasket

Cometic Chevy Gen1 Small Block V8 .060in HTS Exhaust Mani Gasket Set-1.550in x 1.450in Square Ports

MAHLE Original Buick Century 80-77 Exhaust Gas Recirculation Valve Gasket

Cometic Chevy Gen1 Small Block V8 .043in Copper Exhaust Mani Gskt Set-1.550in x 1.450in Square Ports

Frequently Asked Questions

Do these parts fit my 1986 GMC K1500 High Sierra?

What mufflers & resonators options are available for my 1986 GMC K1500 High Sierra?

What brands make parts for the 1986 GMC K1500 High Sierra?

How fast do 1986 GMC K1500 High Sierra parts ship?

What warranty do your 1986 GMC K1500 High Sierra parts come with?