Metallic Ceramic Coated Long Tube Exhaust Headers for 1988-1998 Chevy GMC 4WD OBS | 305/350 V8 | Certified Automotive Experts
Upgrade your 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, TBI or Vortec, these headers feature 1-5/8-inch primary tubes, 2-1/2-inch collectors and 5/16-inch flanges.
Constructed from mandrel-bent carbon 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: 4WD only. These headers are not intended for GMT800 new-body-style trucks or SUVs. This long tube design replaces both factory manifolds and the factory Y-pipe, so a custom exhaust from the collectors back is required.
Key Features
Metallic Ceramic Coating: Provides a durable coated finish designed to help manage underhood heat.
Mandrel-Bent Carbon Steel Tubing: Features 1-5/8-inch primary tubes and 2-1/2-inch collectors.
Reinforced TIG-Welded Construction: Designed for durability under high-temperature conditions.
CNC Laser-Cut Flanges: Features 5/16-inch-thick flanges.
Long Tube Design: Engineered to support exhaust scavenging and stronger mid-to-high-RPM power characteristics.
Performance-Oriented Design: Intended to improve exhaust flow, throttle response and overall performance.
performance.
| 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. |
WARNING: RACE / COMPETITION USE ONLY
This part is built and sold only for racing vehicles used solely in closed-course competition. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. Off-road or off-highway use is not competition use. Installing this part on a vehicle used on public roads may violate the federal Clean Air Act, 42 U.S.C. 7522(a)(3), and state law, and may result in civil or criminal penalties, failed inspections and loss of registration. Emissions laws vary by state. Check yours before you buy.
NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES. THE SALE, USE OR INSTALLATION OF THIS PRODUCT MAY ALSO BE ILLEGAL NATIONWIDE UNDER THE FEDERAL CLEAN AIR ACT (42 U.S.C. 7522(a)(3)).
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$484.99
$584.99
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