Upgrade your compatible 1988–1998 Chevy or GMC 4WD OBS truck or SUV with Certified Automotive Experts Metallic Ceramic Coated Long Tube Exhaust Headers. Designed for 5.0L 305 and 5.7L 350 small block V8 applications, these headers feature 1-5/8-inch primary tubes, 2-1/2-inch collectors, and 5/16-inch flanges.
Constructed from mandrel-bent steel tubing with reinforced TIG-welded construction and a metallic ceramic coating, these headers are engineered to improve exhaust flow, throttle response, and overall performance.
Fitment note: Certain 1999–2000 Classic carryover models may also be compatible. These headers are not intended for 1999 and newer GMT800 new-body-style trucks or SUVs. Installation may require clearance adjustments depending on the vehicle configuration.
| Specification | Details |
|---|---|
| Brand | Certified Automotive Experts |
| Product Type | Long Tube Exhaust Headers |
| Material | Steel |
| Finish | Metallic Ceramic Coating |
| Primary Tube Diameter | 1-5/8 inches |
| Collector Diameter | 2-1/2 inches |
| Flange Thickness | 5/16 inch |
| Tube Construction | Mandrel-bent |
| Welding | Reinforced TIG-welded construction |
| Engine Type | Small Block Chevy/GMC V8 |
| Engine Sizes | 5.0L 305 / 5.7L 350 |
| Main Model Years | 1988–1998 |
| Drivetrain | 4WD |
Designed for select 1988–1998 Chevy and GMC 4WD OBS trucks and SUVs equipped with 5.0L 305 or 5.7L 350 small block V8 engines.
Listed applications include:
Certain 1999–2000 Classic carryover body-style models may also be compatible.
Not intended for: 1999 and newer GMT800 new-body-style trucks or SUVs.
Depending on the vehicle setup and factory equipment, installation may require minor modification, repositioning, or clearancing around:
These adjustments are described as common considerations for performance long tube header installations and are not considered defects. Professional installation is recommended.
| Question | Answer |
|---|---|
| Which engines are these headers designed for? | 5.0L 305 and 5.7L 350 small block V8 engines. |
| What are the primary tube and collector sizes? | 1-5/8-inch primary tubes and 2-1/2-inch collectors. |
| What type of coating do these headers have? | Metallic ceramic coating. |
| Will they fit 1999–2000 Chevy or GMC trucks? | Certain Classic carryover body-style models may be compatible. |
| Will they fit 1999 and newer GMT800 models? | No. They are not intended for 1999 and newer GMT800 new-body-style trucks or SUVs. |
| Can installation require clearance adjustments? | Yes. Depending on the vehicle configuration, adjustments may be required around the column-shift linkage, steering components, or power steering brackets. |
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