Exhaust› Headers, Manifolds and Components

Dorman

MANIFOLD CONVERTER

$714.63

SKU: D00I 674-030

Out of Stock
Out of Stock
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The Dorman 674-030 is a stainless steel natural exhaust manifold with an integrated catalytic converter. It is designed as a direct replacement, ensuring an exact fit and adding a layer of efficiency and convenience to installation. This manifold is a Federal (EPA) compliant part, legal for use on vehicles built to meet Federal EPA standards only. It is not legal for installation on vehicles required to meet CARB standards or registered in states following CARB standards.

The manifold features a durable construction that protects against warping and cracking, and it is leak-resistant for long-lasting performance. It includes a heat shield to protect surrounding engine components, wiring, and hoses. Rigorous quality inspections ensure the part conforms to product standards. It is sold individually and comes with inlet gaskets, an outlet gasket, and mounting hardware.
Show original supplier description
MANIFOLD CONVERTER

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

BrandDorman
Part NumberD00I 674-030

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