Exhaust› Headers, Manifolds and Components
Kooks Headers
Kooks Universal 2 1/4in x 4 1/2in Merge Coll w/9-10in Long Body. Plus 2in for Slip
SKU: K009 9913SM
Moderate — 2–4 hours
Description
Part #: 9913SM
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!"
2-1/4" x 4-1/2" 304 Stainless Stamped Merge Slip-On Collector. 4-Into-1 Design. 2-1/4" I.D. Inlet to Slip Over 2-1/4" Primaries. Kooks Patented Scavenging Spike. 4" Merge to 4-1/2" O.D. Outlet. Includes 2) A/B Style Tabs. Sold Individually.
MIA's Description
Fitment
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Specifications
| Brand | Kooks Headers |
| Part Number | K009 9913SM |
Videos
Don't build another set of headers till you watch this!
Tutorial 02: Slip On Collector: 4-into-1 Assembly
Exhaust Header Secrets: What to Look For
Kooks Headers Mustang GT Install and Dyno Test
Why Not to Put Exhaust Headers on Your Car
Short Tube Headers Vs Stock Headers
Hellcat Kooks Longtube headers X Custom cam 💥
Which #exhaust sounds better on @MISTERZACHARY's C6 #Corvette?
C8 z06 with kooks headers, cat deletes, corsa track catback #c8 #c8z #corvette #kooksheaders
Stock exhaust vs kooks long tube headers and h-pipe on my Mustang GT
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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