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Complete your 1-5/8-inch-primary header
Kooks 9901S gives your fabricated header a 304 stainless four-into-one collector with a 3-inch outlet. The patented scavenging spike sits at the primary-tube junction, with two A/B-style tabs supplied to secure the collector.
SKU: 9901S
The inlet fits over the primary tubes
The primary inlets measure 1-5/8-inch inside diameter to slip over matching outside-diameter tubing. The collector outlet is 3-inch outside diameter.
Choose the quantity for your build
9901S is sold individually. Match the number of collectors to your header arrangement and plan the downstream joint using the stated outlet dimension.
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKU | 9901S |
| Application | Custom header fabrication; single collector |
| Primary inlet diameter | 1-5/8-inch inside diameter; slips over matching outside diameter primary tubes |
| Collector outlet diameter | 3-inch outside diameter |
| Collector design | Four-into-one with patented scavenging spike |
| Included | Two A/B-style tabs to secure collector to primaries |
| Material | 304 stainless steel |
Frequently asked questions
Is 3 inches the primary diameter?
It is the collector outlet outside diameter. The primary inlets are 1-5/8-inch inside diameter.
How many tabs come with it?
Two A/B-style securing tabs are included with each single collector.
