Sale

Exhaust Headers, Manifolds and Components

Hooker

Exhaust Manifold Set Cast Iron - SBC 2.5 Dia

$562.95 $466.95 Save $96.00

SKU: H00I 8525-1HKR

In Stock
In Stock
Ships by Sep 14
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

Hooker's new cast iron small-block Chevy exhaust manifolds offer an increase in performance and visual appearance over stock-style manifolds. Their compact design fits into a wide variety of replacement and engine swap applications. Made from high silicon-molybdenum ductile iron for high temperature strength and better resistance to oxidation and cracking, these manifolds have a larger than stock 1 5/8-inch cross-sectional area and 2 1/2-inch outlets for better air flow and improved performance. Designed for rectangular port heads, these manifolds fit many popular GM applications including standard straight and Vortec straight plug head designs. Gaskets and hardware are included, along with weld-on flanges to aid in downpipe installation.
Show original supplier description

Part #: 8525-1HKR

Hooker's new cast iron small-block Chevy exhaust manifolds offer an increase in performance and visual appearance over stock-style manifolds. Their compact design fit into a wide variety of replacement and engine swap applications. This means you get the traditional look and easy fitment of a stock style exhaust manifold but now with a smoother, cleaner appearance, plus more modern features. These manifolds are cast out of high silicon-molybdenum ductile iron for high temperature strength and better resistance to oxidation and cracking. Internally these manifolds have a larger than stock 1 5/8-inch cross-sectional area and 2 1/2-inch outlets for better air flow and improved performance. Designed for rectangular port heads, these manifolds fit many popular GM applications including standard straight and Vortec straight plug head designs. Finishes include natural, silver, black, and titanium ceramic. Gaskets and hardware are included, along with weld-on flanges to aid in downpipe installation.

Features:

  • A smoother, cleaner appearance compared to original exhaust manifolds, while maintaining a factory style look and feel
  • Tight Tuck Design Provides Universal Fit
  • Made from high silicon-molybdenum ductile iron for high temperature strength plus resistance to oxidation and cracking
  • Free-Flowing For Good Performance
  • Designed with a larger 1 5/8" cross-sectional area and 2 " outlets for better air flow and increased performance
  • Catalytic Converter Efficiency
  • Designed for rectangular port heads
  • Hi-Silicon-Moly Ductile For Durability
  • Accommodates standard straight and Vortec straight plug head designs for better application coverage
  • Corrosion Resistant
  • Includes weld-on flanges for easier downpipe pipe installation (custom downpipe required)
  • 2 Bolt Exit Flange Configuration
  • Available in natural cast iron or ceramic coated finishes (silver, black and titanium)
  • Perfect Complement To Engine Swap Mount Plates
  • Includes mounting hardware and gaskets for inlet and outlet flanges
  • Perfect Complement To Holley Engine Swap Oil Pans

Hooker Exhaust Manifolds | 1.625 in. Tubing | 2.5 in. Collector Dia. | Silver Ceramic | Cast Iron | Rectangle Port Shape

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

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

BrandHooker
Part NumberH00I 8525-1HKR

About MOTORMIA

5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold

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 Policy

Shipping

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