Product images and videos are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Exhaust› Headers, Manifolds and Components
Hooker
LS Swap Exhaust Manifolds Center Dump Natural Cast Multi-Fit GM Gen III, Iv LS Engines 2.50-In. Outlet Block Hugger Style With Center Dump Outlet Hooker BlackHeart
SKU: H00I 8504HKR
Moderate — 2–4 hours
Overview
Show original supplier description
Part #: 8504HKR
For applications or projects where our existing LS and LT swap manifolds don't quite fit or you need an exit point further forward in the engine bay to avoid the steering shaft, a starter, or some other component, our new "center dump" cast iron swap manifolds are the solution. Cast out of the same Hi-Silicon-Moly Ductile Iron as our 8502HKR and BHS516 lineup, it will be tough to find a more durable, streamlined, and quiet exhaust option. Available in natural cast, silver ceramic, or black ceramic finishes, these manifolds are offered with flanges, gaskets, and flange hardware for connecting to our lineup of adapter pipe kits. This not only allows for the easy addition of catalytic converters but also makes it simple to connect to our many exhaust system options.
Features:
- 2.5 inch outlet diameter offers improved flow for maximum performance from a cast iron exhaust manifold
- Tight tuck design that provides a more forward exit compared to our standard swap manifolds (see pictures for diagram and specs)
- Intended for GM LS engine swap applications where durability, quiet operation, and leak-free sealing is desired
- Available in Natural as-cast finish for a factory appearance, silver ceramic, or black ceramic
- Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance
- Perfect complement to Hooker engine swap mount plates and Holley engine swap oil pans
- Hardware included: Nickel plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware
Multi-Fit - GM Gen III/IV LS Engines - 2.50-In. Outlet - Block Hugger Style with Center Dump Outlet
Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Hooker |
| Part Number | H00I 8504HKR |
Videos
Upgrade Your Small Block’s Stock Cast-Iron Exhaust Manifolds with High-Flow Manifolds from Hooker
Chevy 350 5.7L Open Headers
Hooker Turbo Manifold kit installed on the LS 1968 Camaro.
Exhaust is done! Hooker Blackheart Install on NOVA LS
LS 3″ Hooker Exhaust | 70-74 Camaro/Firebird
LS Swap S10 Xtreme Hooker Blackheart 3" Exhaust Install...and Troubleshooting
About MOTORMIA
Buy with Confidence
Returns & Fitment
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return PolicyShipping
Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.
Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.
View Full Shipping Policy