// WHY THIS PART EARNS ITS SPOT

2.5 inch outlet diameter offers improved flow for maximum performance from a cast exhaust manifold

Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance

Intended for GM LS engine swap applications where durability, quiet operation, and leak-free sealing is desired

Polished finish, but also available in natural cast finish for a factory appearance

Nickel plated steel mating flanges, MLS mating flange gaskets, and mating flange hardware included

Stainless Steel construction to provide unmatched durability and corrosion resistance

Perfect complement to Hooker engine swap mount plates and Holley engine swap oil pans

// THE FULL RUNDOWN

Hooker Blackheart now offers stainless steel versions of our popular cast iron lineup of LS swap exhaust manifolds based on the 8502HKR and family. The new stainless steel manifolds offer a number of advantages over the cast iron version, including increased durability, reduced weight, and improved corrosion resistance. The shorty tight tuck design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance. These are available in both natural cast and polished depending on the look you're going for and all hardware is included (gaskets, bolts, and flanges). Features: Specifications: Fitment: Proposition 65 ⚠ WARNING: Cancer and Reproductive Harm https://www.P65Warnings.ca.gov

// WILL IT FIT? THE STRAIGHT ANSWER

VEHICLE	YEARS	TRIM
Buick GS	1970-1972	Base
Buick GS 350	1968-1969	Base
Buick GS 400	1968-1969	Base
Buick GS 455	1970	GSX
Buick GS 455	1970-1972	Base
Buick Regal	1978-1987	Base
Buick Regal	1978-1988	Limited
Buick Regal	1978-1982	Sport
Buick Regal	1982	Limited Turbo
Buick Regal	1982-1983	Estate Wagon
Buick Regal	1983-1986	T-Type
Buick Regal	1984-1987	Grand National
Buick Regal	1987	GNX
Buick Regal	1988	Custom
Buick Skylark	1964-1972	Base
Buick Skylark	1968-1972	Custom
Buick Skylark	1970, 1972	350
Buick Special	1964-1969	Base
Buick Special	1964-1967	Deluxe
Buick Sportwagon	1964-1972	Base
Buick Sportwagon	1966, 1968-1969	Custom
Chevrolet Blazer	1973-1974	Base
Chevrolet C10	1975-1986	Silverado
Chevrolet C10	1975-1986	Custom
Chevrolet C10	1975-1981	Cheyenne
Chevrolet C10	1975-1986	Scottsdale
Chevrolet C10	1975-1980	Custom Deluxe
Chevrolet C10	1978-1980	Big Ten
Chevrolet C10	1981	Deluxe
Chevrolet C20 Panel	1967	Base
Chevrolet C20 Pickup	1967-1972	Base
Chevrolet Camaro	1970-1973, 1975	RS
Chevrolet Camaro	1970-1974, 1977-1981	Z28
Chevrolet Camaro	1970-1972	SS
Chevrolet Camaro	1970-1980	Base
Chevrolet Camaro	1973-1978	LT
Chevrolet Camaro	1976-1978	LT Rally Sport
Chevrolet Camaro	1976-1980	Rally Sport
Chevrolet Camaro	1979-1981	Berlinetta
Chevrolet Camaro	1981	Sport
Chevrolet Chevelle	1964-1977	Malibu
Chevrolet Chevelle	1964-1968	300
Chevrolet Chevelle	1964-1965	Malibu Super Sport
Chevrolet Chevelle	1965-1969	300 Deluxe
Chevrolet Chevelle	1966	Super Sport 396
Chevrolet Chevelle	1967-1972	Concours
Chevrolet Chevelle	1967-1970	SS 396
Chevrolet Chevelle	1968	Nomad Custom
Chevrolet Chevelle	1968-1972	Nomad
Chevrolet Chevelle	1969-1972	Concours Estate
Chevrolet Chevelle	1969-1972	Greenbrier
Chevrolet Chevelle	1970-1972	Base
Chevrolet Chevelle	1971-1972	SS
Chevrolet Chevelle	1973	Malibu Estate
Chevrolet Chevelle	1974-1976	Malibu Classic Estate
Chevrolet Chevelle	1974-1977	Malibu Classic
Chevrolet El Camino	1964-1972	Base
Chevrolet El Camino	1968-1972	SS
Chevrolet El Camino	1968-1972	Custom
Chevrolet K20 Panel	1967	Base
Chevrolet K20 Pickup	1967-1972	Base
Chevrolet K5 Blazer	1975, 1977-1980	Custom Deluxe
Chevrolet K5 Blazer	1975-1980	Cheyenne
Chevrolet K5 Blazer	1976	Base
Chevrolet K5 Blazer	1978, 1980-1982	Silverado
Chevrolet K5 Blazer	1981	Deluxe
Chevrolet K5 Blazer	1981-1982	Custom
Chevrolet Malibu	1978-1983	Classic
Chevrolet Malibu	1978-1980	Classic Estate
Chevrolet Malibu	1978-1981	Base
Chevrolet Malibu	1978-1981	Classic Landau
Chevrolet Malibu	1979	Police
Chevrolet Malibu	1979	Landau
Chevrolet Malibu	1979-1980	Sport
Chevrolet Malibu	1979-1980	Classic Sport
Chevrolet Malibu	1979-1980	Estate
Chevrolet Monte Carlo	1978, 1980	Sport
Chevrolet Monte Carlo	1978-1981	Landau
Chevrolet Monte Carlo	1979, 1981-1988	Base
Chevrolet Monte Carlo	1983	CL

+ 40 MORE APPLICATIONS — CONTACT US TO CONFIRM YOURS

JAP FITMENT PROMISE // If we confirm fitment for your rig and it doesn't fit, return shipping is on us. No restocking fee. That's the deal.

// GETTING IT TO YOUR GARAGE

THIS PART //

Ships UPS/FedEx ground — estimated $49.95. Additional ground items in the same order ship at reduced rates. Exact rate calculated at checkout.

REAL-COST SHIPPING

We charge what the carrier charges — no padding, no games. Ground parcels via UPS/FedEx, signature required. You see the exact number before you pay.

1-2 DAY HANDLING

Most in-stock parts leave the warehouse within 1-2 business days. Built-to-order parts show extended lead times.

LTL FREIGHT FOR THE BIG STUFF

Bumpers, hardtops, axles and full kits ship LTL truck freight (typically $400-500 per unit, plus shipping protection). Freight is charged per unit — two bumpers means two freight charges. Inspect before signing and note any damage on the delivery receipt.

30-DAY RETURNS

Unused, uninstalled parts in original packaging within 30 days. RMA required — start with a quick message. Shipping charges are non-refundable; freight returns quote at carrier rates.

FULL SHIPPING & RETURNS POLICY

// PAY YOUR WAY

CHECKING PAYMENT NETWORK…

ALL MAJOR CARDS + WALLETS

Visa, Mastercard, Amex, Discover, Apple Pay, Google Pay and Link one-tap checkout — live in our Stripe checkout right now. Card numbers never touch our servers.

BUY NOW, PAY LATER — LIVE

Klarna, Afterpay and Zip are active at checkout on eligible orders. Pick your split at payment — get the lift now, pay as you wheel. No JAP paperwork, approval happens right in checkout.

CRYPTO — LIVE AT CHECKOUT

Pay with crypto directly in our Stripe checkout — select the crypto option at payment and settle in USDC and supported coins. On-chain payment, standard order flow, same warranty.

3-D SECURE + RADAR ANTI-FRAUD

Every card payment runs Stripe Radar machine-learning fraud screening, with 3-D Secure (Visa Secure / Mastercard Identity Check) stepping in automatically when your bank requires it. Your card, verified by your bank.

PCI-DSS L1

HIGHEST CARD-SECURITY CERTIFICATION

AES-256 + TLS 1.3

ENCRYPTED IN TRANSIT & AT REST

TOKENIZED

WE NEVER SEE YOUR CARD NUMBER

Payments are processed by Stripe — the same infrastructure behind Amazon, Ford and Shopify checkouts. Dispute protection and receipt trails on every order. See our Privacy Policy.

// COVERED WHEN IT COUNTS

THIS PART //

Backed by the full Hooker manufacturer warranty. JAP is an authorized dealer — your warranty is valid from day one.

FULL MANUFACTURER WARRANTY

Every part ships new in the box with the manufacturer's standard warranty — terms and duration vary by brand (typically 1 year to limited lifetime on hard parts). We only sell through authorized channels, so coverage is never voided by gray-market sourcing.

WE RUN THE CLAIM WITH YOU

Warranty issue? Don't fight the manufacturer's phone tree alone. Hit our team with your order number and photos — we open the claim with the brand and stay on it until it's resolved.

WHAT WARRANTY DOESN'T COVER

Defects in materials and workmanship are covered. Trail damage, improper installation, modification, and normal wear items (bushings, pads, wear plates) generally are not — that's standard across every brand we carry.

SEPARATE FROM RETURNS

Warranty claims (defects after use) and returns (unused parts within 30 days) are different lanes. Not sure which applies? Message us first — we'll route it the fast way.

START A WARRANTY CLAIM

FITMENT	Jeep - See Description
BRAND	Hooker — shop all Hooker parts →
PART #	8503-1HKR
SKU	8503-1HKR
CATEGORY	Exhaust Parts > Headers
AVAILABILITY	IN STOCK
RETURNS	30-day return window

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