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Product Summary

Universal Fit, Cast Iron, Ceramic Coated, Silver

  • Designed to hug close to the engine block for tight applications
  • Made from cast iron and ceramic coated
  • Recommended for strong performance on engines making up to 500 horsepower
  • Intended for all GM LS engines
  • Contoured design aims the exhaust directly at the exit port for improved flow

Key Specs

MFG. Part #8501-1HKR
Material TypeCast Iron
FinishCeramic Coated
ColorSilver
Collector Diameter2-1/4 Inch

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Details

Hooker cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine–swap applications. Their contoured design aims the exhaust directly at the exit port for improved flow. Being cast iron means they will provide years of leak–free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to your frame/floor pan for maximum ground clearance. “Hook” up your GM LS engine with Hooker cast iron Manifolds today!

  • Intended for all GM LS (except LS7 and LS9) engine swap applications where durability, quiet operation, emissions compliance and leak-free sealing is desired.
  • Recommended for strong performance on engines making up to 500 horsepower (For optimum high rpm performance see Hooker long tube engine swap headers)
  • Tight tuck design provides universal fit for most popular chassis and a clean traditional muscle car appearance - ideal for GM E-Rod installations.
  • Free-flowing for good performance and catalytic converter efficiency.
  • Cast from Hi-Silicon-Moly Ductile Iron to provide durability and corrosion resistance.
  • 2 bolt exit flange configuration matches 2010 Camaro (also the same as the E-rod exhaust manifolds) which can be used with OE gaskets and fasteners if desired, for an OE quality seal.
  • 2.25-inch outlet diameter
  • 304 stainless steel mating flanges included (mating flange fasteners are not included)

Charts

CARB Warning

Follow EPA, CARB, and state regulations for engine changes

Emissions warning: this part is for vehicle engine changes, not direct oem engine replacements. In California, engine changes are legal when done in compliance with California bureau of automotive repairs (bar) engine change policy. For assistance, call bar referee at: (800) 622-7733. And see https://bar.Ca.Gov/consumer/smog_check_program/engine_changes. All customers must comply with federal epa mobile source enforcement memorandum no. 1a (and addendum) and all applicable state regulations when conducting engine changes. Improper installation and/or use of this part in California may subject the installer and/or owner to a $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and laws of all states for use of this engine change part on makes or models of vehicles that render them noncompliant with applicable state and/or federal emission laws with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine

Specifications

KEY SPECS
MFG. Part #8501-1HKR
BrandHooker Headers
Material TypeCast Iron
FinishCeramic Coated
ColorSilver
Collector Diameter2-1/4 Inch
GENERAL
Tube O.D.1.625"
Emission Code3
GTIN Code090127681251