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Hooker 8525-1HKR Small Block Chevy Exhaust Manifolds Rectangular Port

(Chevrolet Camaro 1967-74, Impala 1958-74, Malibu 1964-67, 1973-74, Chevelle 1964-73, C10 Pickup 1968-74, Caprice 1966-74 + 39 more models)

Part of: Hooker BlackHeart Cast Iron LS Swap Exhaust Manifolds

Other options in this family: Hooker 8525HKR Hooker 8525-3HKR Hooker 8527HKR Hooker 8527-3HKR

Manufacturer

Picture for manufacturer Hooker

Part Number

8525-1HKR
7 reviews
Sale Price

$519.95

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Hooker 8525-1HKR Small Block Chevrolet Exhaust Manifolds deliver improved performance and airflow over factory manifolds while maintaining a clean, OEM-style appearance. Constructed from high silicon-molybdenum ductile iron, these manifolds offer superior high-temperature strength with excellent resistance to oxidation and cracking.

Key Features:

  • Designed specifically for rectangular port cylinder heads
  • Larger 1-5/8" cross-sectional area with 2-1/2" outlets for increased airflow and performance
  • Compatible with standard straight plug and Vortec straight plug head designs
  • High silicon-molybdenum ductile iron construction for durability and heat resistance
  • Includes weld-on flanges for custom downpipe installation
  • Complete mounting hardware and inlet/outlet gaskets included
  • Available in multiple finishes: natural cast iron, or ceramic coated in silver, black, or titanium
  • Smoother, cleaner styling compared to stock manifolds while retaining factory-style fitment

These manifolds provide an excellent balance of performance enhancement and visual appeal, making them ideal for street and performance Small Block Chevy builds. The included hardware and gaskets simplify installation, while the weld-on flanges accommodate custom exhaust systems.

Products specifications

Fits

Chevrolet Camaro 1967-74, Impala 1958-74, Malibu 1964-67, 1973-74, Chevelle 1964-73, C10 Pickup 1968-74, Caprice 1966-74, El Camino 1959-60, 1964-74, Monte Carlo 1970-74, Chevy II 1962-68, Bel Air 1955-74, Biscayne 1958-72 + 34 more models

Bolt Size

3/8-16 x 3/4

Brand

Hooker

Prop 65

Yes

California Proposition 65 Chemical Name

Nickel (Metallic)

CARB (California) Compliant

No

Category

Exhaust

Collector Diameter

2.50 inch

Emission Code

3

Engine

Chevrolet Small Block Gen I

Exhaust Port Shape

Rectangle

Header Finish

Silver Ceramic

Header Style

Manifold

Material

Cast Iron

Part Type

Exhaust Manifold

Product Type

Manifold

Sub Category

Exhaust Manifolds

Warning

California Proposition 65

Low prices easy to order

Parts I ordered came as described and in a timely manner within a couple days of ordering

was completely satisfied

Quick and easy

great experience!

Fast shipping

great company have done business with for very long time greatly shipping & communication

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