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Exhaust› Mufflers and Resonators

Kooks Headers

Kooks Universal 3in Center/Center Oval Muffler (4x8x12)

$120.82 $108.74 Save $12.08

SKU: K009 KO300-12

In Stock
In Stock
Ships by Jul 31
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: KO300-12

Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!"

3in. Oval Muffler. Polished Stainless Steel. Center Inlet/Center Outlet. 12in. Long Body. 16in. Overall length. 4-1/2in. x 7-1/2in. Oval Body. 3in. I.D. Inlet and Outlet. Sold Individually.

MIA's Description

The Kooks KO300-12 is a 12-inch oval clamp-in muffler crafted from polished stainless steel. It features a center inlet and center outlet, with both having a 3-inch internal diameter designed to slip fit over 3-inch tubing. This muffler is sold individually and includes two clamps for installation, with welding not required. It is a universal fit muffler, though some adaptation may be required for specific vehicle configurations.

Fitment

Fitment Guaranteed

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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.

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Specifications

BrandKooks Headers
Part NumberK009 KO300-12

Buy with Confidence

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.

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