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Hooker Blackheart BH14348 Exhaust System - C1500/GMT400 - 4WD

Compatible with 1988-1998 GM® C1500 Trucks and SUVs 4-Wheel Drive - Regular Cab Short Bed 117.5 Inch Wheelbase. This exhaust system is not created or sold by GM®. Sold as a Kit.

Part # BH14348 Be the first to write a review

Hooker Blackheart BH14348 Exhaust System - C1500/GMT400 - 4WD

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This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle.

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This Hooker Blackheart exhaust system is ideal for 4WD (2WD is available - BH14345) GM C1500 "OBS" projects that are planning on running a GM LS or LT engine but will work with nearly any V6 or V8 engine swap for this GMT400 chassis. Pair with swap exhaust manifolds (8502HKR, 8503HKR, BHS516, etc.) and adapter pipe kit BH14350 to accomplish two things: 1) fill the gap between the end of the manifold and 2.50-inch inlet Hooker Blackheart exhaust system and 2) easily incorporate a catalytic converter. These parts were intended to work together and for compatibility with Hooker Blackheart engine mounting brackets listed for this vehicle application only. They are designed to provide the user with a means of installing the factory catalytic converters from a 1999-2006 5.3 or 6.0-liter Chevy Silverado truck (4.00-inch maximum diameter), into this vehicle application, within the stipulations/requirements published by CARB/EPA for emissions-legal engine changes. The ability of the final fabricated assembly to satisfy these requirements should be confirmed with local/state authorities prior to the installation of these components. *Although listed as ending in 1998, this exhaust will fit the classic trucks and SUVs that continued on into 2002 with the same GMT400 chassis.


  • For 4WD C1500/GMT400 Applications - Regular Cab Short Bed - 117.5 Inch Wheelbase
  • Factory quality O.D. to O.D. connection solution for eliminating 3-bolt collector gaskets
  • The straight through muffler design delivers an aggressive to moderate performance tone
  • 409 Stainless Steel construction for long life and durability
  • Designed for use with any of our Hooker Blackheart LS and LT Swap exhaust manifolds (8501HKR or BHS516 variants) and adapter kit BH14350
  • Hardware included
Brand Hooker Blackheart
Emission Code8
Exhaust SeriesBlackheart
Exit PositionDual Out Side
Material409 Stainless Steel
Mount TypeUses New Hangers (Included)
Muffler Inlet Diameter (in)2.5
Muffler Material409S Stainless Steel
Muffler Outlet Diameter (in)2.50
Muffler Quantity1
Muffler SeriesBlackheart
Muffler TypeAbsorption
Product TypeExhaust Systems
Sound LevelAggressive/Moderate
System TypeCat-Back
Tubing Diameter (in)2.5"
Manufacturer Part NumberBH14348
California Proposition 65 Chemical NameChromium (hexavalent compounds)
California Proposition 65 Chemical Name 1Nickel (metallic)
Part NumberBH14348

This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle. Federal guidelines indicate that an engine swap is allowable if one or more of the following conditions apply:

  • If there is a reasonable basis for knowing that emissions are not adversely affected as described in the EPA Tampering Policy dated November 23rd, 2020
  • The resulting vehicle is identical (with regard to all emissions related parts, engine design parameters and engine calibrations) to a certified configuration of the same or newer model year as the vehicle chassis
  • The vehicle is a uncontrolled vehicle - Vehicles that were manufactured before emission control regulations took effect are called uncontrolled vehicles. Aftermarket parts regulations and anti-tampering laws do not apply to these vehicles
  • An EO legal engine swap kit is utilized (such as a GM EROD)
  • The vehicle is being used for Competition Use Only - Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street

Consumers are responsible for complying with laws prohibiting tampering, and for ensuring that modified vehicles are operated in a manner that complies with applicable laws.

Motor vehicle emissions standards are intended to help achieve and maintain air quality goals that benefit human health and the environment. The U.S. Environmental Protection Agency, the California Air Resources Board, Environment Canada, and other regulatory agencies prohibit the operation of vehicles on public roads that violate applicable emissions standards. The alteration of certified production vehicles to modify, remove, or render inoperable emissions control hardware or software, known as "tampering" is prohibited by the U.S. Clean Air Act and other laws. Tampering with motor vehicles emissions control systems is punishable by substantial monetary penalties.

Supershops is committed to performance parts that allow enthusiasts to modify their vehicles and meet emission requirements. The information provided here is intended to provide general guidance of interest to most consumers. This guidance may not apply to all vehicles or all situations. It is up to each consumer to evaluate his or her own situation and take the steps necessary to comply with applicable laws. The websites listed below have more information about regulations and policies pertaining to motor vehicle emissions. You should also check the regulations applicable to your local area.

EPA Website

CARB Website


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    *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.