44+ 1978 Chevrolet K20 Mufflers & Resonators Custom Deluxe Parts

Custom Deluxe · Mufflers & Resonators (44 products)

Exact-fit parts for the 1978 Chevrolet K20 Custom Deluxe.

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

Cometic Gasket

Part # C5897HTS

Confirmed Fit

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

$34.76

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

Cometic Chevy Mark-IV/GM Gen-V/VI BB V8 .030in. MLS Exh Hdr Gasket w/ AFR BBC Magnum 24 Degree Heads

Cometic Gasket

Part # C15443-030

Confirmed Fit

Cometic Chevy Mark-IV/GM Gen-V/VI BB V8 .030in. MLS Exh Hdr Gasket w/ AFR BBC Magnum 24 Degree Heads

$27.79

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

Magnaflow

Part # 93506

Confirmed Fit

MagnaFlow Conv Univ 2.5 FED

$177.00

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 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

Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads

Cometic Gasket

Part # C5258

Confirmed Fit

Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads

$72.52

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

Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD)

Walker Exhaust

Part # 21784

Fits with Conditions

Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD)

$55.69

Fel-Pro

Part # 9587

Confirmed Fit

Fel-Pro Chevrolet C10 Exhaust Pipe Flange Gasket

$2.24

MAHLE Original Buick Apollo 75-73 Intake To Exhaust Hot Spot

Victor Reinz

Part # B7354

Confirmed Fit

MAHLE Original Buick Apollo 75-73 Intake To Exhaust Hot Spot

$15.73

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 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

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 Gasket

Part # C5896HTG

Confirmed Fit

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

$38.12

Frequently Asked Questions

Do these parts fit my 1978 Chevrolet K20 Custom Deluxe?

This page groups parts listed for the 1978 Chevrolet K20 Custom Deluxe. 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 1978 Chevrolet K20 Custom Deluxe?

We offer a wide selection of mufflers & resonators parts for the 1978 Chevrolet K20 Custom Deluxe. 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 1978 Chevrolet K20 Custom Deluxe?

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

How fast do 1978 Chevrolet K20 Custom Deluxe 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 1978 Chevrolet K20 Custom Deluxe 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.

1978 Chevrolet K20(3,806 parts)

1978 Chevrolet K20(3,806 parts)

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Other Chevrolet K20 Years

Custom Deluxe · Mufflers & Resonators (44 products)

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 .043in Copper Exhaust Manifold Gasket

Cometic Chevy Mark-IV/GM Gen-V/VI BB V8 .030in. MLS Exh Hdr Gasket w/ AFR BBC Magnum 24 Degree Heads

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

MagnaFlow Conv Univ 2.5 FED

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

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

Cometic GM Small Block Aluminum/Rubber Exhaust Port Cover Set - 18 Degree Heads

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

Quiet-Flow Direct Fit Exhaust Muffler 2.5" Inlet (ID) 2" Outlet (OD)

Fel-Pro Chevrolet C10 Exhaust Pipe Flange Gasket

MAHLE Original Buick Apollo 75-73 Intake To Exhaust Hot Spot

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

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

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 .094in HTG Exhaust Manifold Gasket Set

Frequently Asked Questions

Do these parts fit my 1978 Chevrolet K20 Custom Deluxe?

What mufflers & resonators options are available for my 1978 Chevrolet K20 Custom Deluxe?

What brands make parts for the 1978 Chevrolet K20 Custom Deluxe?

How fast do 1978 Chevrolet K20 Custom Deluxe parts ship?

What warranty do your 1978 Chevrolet K20 Custom Deluxe parts come with?