Hooker Blackheart Gen III Hemi Swap Exhaust Manifolds

Gen III Hemi Swap Exhaust Manifolds with 2.5-inch Outlets, Natural Cast-Low Profile

Part # BHS582
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This product is engineered to facilitate the installation of a later model, emissions friendly engine into a vintage / classic vehicle.

See Emissions Details
Hooker Blackheart Gen III Hemi swap exhaust manifolds are one part of a fully engineered swap system that provides maximum component clearances and ideal drivetrain geometry. These manifolds are designed to fit a wide range of swap applications where clearance is limited. Fitment has been confirmed on several popular platforms, see below. These exhaust manifolds are cast from hi-silicon-moly ductile iron and feature 2.5-inch 2-bolt collectors. These manifolds provide clearance to the brake booster, steering shaft, steering box, and starter motor (both left & right-side-mounted starters) and provide clearance for several automatic & manual transmission options. Manifold fitment has been confirmed on the following Gen III Hemi swap vehicles when used with Holley engine swap components: compatibility with other vehicle combinations and swap components is likely but has not been confirmed. 1967-1972 A-Body manual steering only, requires power steering or shortened steering column tube and u-joint style coupler 1966-1972 B-Body-Manual or Power Steering, Figure 3 in photo & instruction sheet 1970-1974 E-Body-Manual or Power Steering, Figure 3 in photo & instruction sheet 1987-1996 Dodge Dakota 2wd V6/V8 1997-2004 Dodge Dakota 2wd V6/V8-Upper Control arm clearance recommended, Figure 4 in photo & instruction sheet 1972-1993 Dodge D100/D150


  • Gen III Hemi swap exhaust manifolds – a compact, high-flow design with a factory look that is ideal for engine swaps with limited space
  • Choose from plain as-cast, black ceramic, or silver ceramic finishes – ceramic finish reduces underhood heat and resists corrosion
  • Intended for Gen III Hemi engine swap applications where durability, quiet operation, and leak-free sealing are desired
  • Cast from heavy-duty hi-silicon-moly ductile iron for long-lasting durability and corrosion resistance
  • 2.50-inch outlet diameter offers improved flow for maximum performance from cast iron exhaust manifolds
  • Includes collector flanges, Multi-Layer stainless Steel (MLS) collector gaskets, and bolts – that make it easy to fabricate downpipes
  • Works with left or right-hand side starters and all popular transmissions
  • The slotted bottom row of holes makes it easy to install (on pre-installed lower bolts and gaskets for each cylinder head)
  • Ideal for use in applications that require Catalytic convertors

About Hooker BlackHeart

The BlackHeart team utilizes the latest technology and materials to design exhaust systems, engine swap kits, and mufflers for both import and domestic cars and trucks. Hooker BlackHeart is platform-engineered to provide superb performance, aesthetics, and fitment.

Bolt SizeM8 x 1.25 x 25mm
Brand Hooker BlackHeart
Collector Diameter2.50 inch
Emission Code8
EngineGEN 3 HEMI
Header FinishNatural
Header StyleManifold
Primary Tube Dia.1-3/4 inch
Product TypeManifold
Tube MaterialCast Iron
Part NumberBHS582

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.

Holley 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

Requires Blackheart or White Box engine mounts, transmission crossmember, and appropriate adapter for the desired transmission Recommended Gaskets: 2003-2008 5.7L Hemi Engines Use Gaskets 7594 (or Mopar #'s 530139343AA & 53013944AA) 6.1L, 6.2L, 6.4L, and 2009-up 5.7L Hemi Engines (no EGR) use Gaskets - 7595 (or Mopar #'s 5038098AA & 5038099AA) 2009 & Up 5.7L, and 2011 & Up 6.4L Hemi Engines (with EGR and Heat Shield)-Mopar #'s 5045495AA & 5045496AA BHS582, BHS583, or BHS584 manifolds WILL fit the following engines (* see notes): 5.7L 2003-2008 * 1, 2 5.7L 2009-2020 * 1, 3, 4 6.1L 2005-2010 * 1, 3 6.2L 2015-2020 * 1, 3 6.4L 2011-2020 * 1, 3, 4 1) Holley Engine Mounts or adapter brackets are required for correct fitment 2) Square Exhaust Port-OEM Gasket P/N: 53013943AA and P/N: 53013944AA, or 7594 3) D-shaped exhaust port (No EGR) OEM Gasket P/N: 05038098AA and P/N: 05038099AA, or 7595 4) D-shaped exhaust port (with EGR and heat shield) OEM Gasket P/N: 5045495AA and PN: 5045496AA

*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.