Thermal Coated Headers for 1973–1987 Chevy & GMC Trucks
Upgrade the exhaust system on your classic Chevy or GMC truck with Certified Automotive Experts Thermal Coated Headers. Designed for compatible 1973–1987 C/K-series trucks and related square body applications, these headers are built for Small Block Chevy V8 engines ranging from 265 to 400 cubic inches.
Featuring 1 5/8-inch primary tubes, 2.5-inch collectors, CNC-machined 3/8-inch flanges, and TIG-welded construction, these headers provide a durable and efficient exhaust path for classic truck restorations, street builds, and performance projects.
The black aluminized thermal coating adds corrosion resistance and helps manage under-hood heat while providing a clean, durable finish.
Key Features
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Designed for compatible 1973–1987 Chevy and GMC truck applications
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Fits Small Block Chevy V8 engines from 265–400 cubic inches
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1 5/8-inch primary tubes for efficient exhaust flow
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2.5-inch collector outlets
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CNC-machined 3/8-inch mounting flanges
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Precision-formed steel tubing
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TIG-welded joints for reliable construction
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Black aluminized thermal coating
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Helps protect against corrosion and heat
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Suitable for compatible 2WD and 4WD applications
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Ideal for square body restorations, street trucks, and performance builds
Compatible Applications
These headers are designed for compatible configurations of:
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1973–1987 Chevy C10
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1973–1987 Chevy K10
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1973–1987 Chevy C20
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1973–1987 Chevy K20
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1973–1987 Chevy C30
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1973–1987 Chevy K30
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Chevy Blazer
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GMC Jimmy
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Chevy/GMC Suburban
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Small Block Chevy V8 engines, 265–400 cu. in.
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Compatible 2WD and 4WD applications
Durable Thermal-Coated Construction
The headers feature precision-formed steel tubing with TIG-welded joints and CNC-machined 3/8-inch flanges for a strong and consistent mounting surface. The black aluminized thermal coating helps protect the steel from corrosion while providing additional heat protection compared with uncoated steel.
Performance-Focused Design
With 1 5/8-inch primary tubes and 2.5-inch collectors, these headers are designed to provide an efficient exhaust path for compatible Small Block Chevy V8 applications. They are a practical upgrade for classic Chevy and GMC truck restorations, square body builds, and performance-oriented street trucks.
What's Included
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Left header assembly
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Right header assembly
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Copper/fiber multi-layer head gaskets
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Copper collector gaskets
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Mounting hardware
Frequently Asked Questions
What vehicles do these headers fit?
They are designed for compatible 1973–1987 Chevy and GMC C/K-series trucks and related square body applications, including C10, K10, C20, K20, C30, K30, Blazer, Jimmy, and Suburban models.
What engines do these headers fit?
They are designed for compatible Small Block Chevy V8 engines ranging from 265 to 400 cubic inches.
What size are the primary tubes?
The primary tubes measure 1 5/8 inches.
What size are the collectors?
The collector outlets measure 2.5 inches.
What are the headers made from?
They are constructed from precision-formed steel tubing with CNC-machined 3/8-inch flanges and TIG-welded joints.
What type of coating do they have?
The headers feature a black aluminized thermal coating designed to provide heat protection and corrosion resistance.
Are they suitable for 2WD and 4WD trucks?
Yes, they are designed for compatible 2WD and 4WD Chevy and GMC truck applications.
Are gaskets and mounting hardware included?
Yes. The kit includes both header assemblies, copper/fiber multi-layer head gaskets, copper collector gaskets, and mounting hardware.
Are these suitable for square body builds?
Yes. They are designed for compatible 1973–1987 Chevy and GMC square body truck and SUV applications.
Are these long-tube headers?
They use a long-tube-style design intended to provide an efficient exhaust path for compatible Small Block Chevy applications. Always verify your vehicle, engine, and specific configuration before ordering.
