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Description
TRACTUFF K20Z3 / K24A2 (RBC / RBB) WATER BYPASS ADAPTER**Now included: 1 x 90 1 2" NPT to 5 8 hose barb, and 1 x 1. 00 hose clamp** Our K20Z3 K24A2 water bypass adapter allows RAA, RBC, RBB, and RSP cylinder head owners to run the more popular aftermarket intake manifold options that were designed for the earlier PRB PRC flange. The PRB PRC style manifolds do not have an integrated coolant passage so the coolant bypass hole is left open when used together. Even if you don't plan on running a PRB PRC style
**Now included: 1 x 90° 1/2" NPT to 5/8” hose barb, and 1 x 1.00” hose clamp**
Our K20Z3/ K24A2 water bypass adapter allows RAA, RBC, RBB, and RSP cylinder head owners to run the more popular aftermarket intake manifold options that were designed for the earlier PRB/ PRC flange. The PRB/ PRC style manifolds do not have an integrated coolant passage so the coolant bypass hole is left open when used together.
Even if you don't plan on running a PRB/ PRC style manifold... there are plenty of benefits that make this product a must have! The biggest benefit is in the reduction of intake manifold temps by eliminating the heat transfer/ heat soak associated with hot coolant running through the manifold. By modifying the manifolds flange (cutting off coolant portion) and running our adapter the coolant is kept away from the manifold completely, just like what you would find on the earlier PRB/ PRC heads, so NOW your Hondata IM gasket will really work!! We've seen drops as much as 18°!! Not to mention, the additional benefit of no longer having to drain the coolant when removing the intake manifold for maintenance or swaps... makes things a real SNAP!
We recommend a TracTuff Bypass Hose Fitting when connecting the OEM bypass hose.
Installation Guide
Start by selecting one of the two o-rings (one is a back-up) and install it into the recess on the adapter’s backside. Set the adapter aside.
Grab the stainless steel link and longer 40mm Genuine Honda flanged bolt and install the bolt into the smooth hole in the link.
Install the bolt and stainless link into the right-most intake manifold flange bolt hole. Tighten lightly with the link facing upward.
Grab the shorter 28mm Genuine Honda flange bolt and adapter and install the bolt into the lower bolt hole.
Take the bolt and adapter and install it over the exposed water & egr ports. Thread the bolt into the cylinder head until it is hand tight.
Grab the stainless steel set screw and thread it into the stainless link. The pointed set screw will tighten into the hole well but in some extreme cases it may be a good idea to use some medium grade Loctite.
Swing the stainless link and set screw down until it lines up with the pilot hole of your choice.
Tighten the 8mm intake manifold and Water Bypass bolts to 18 lb. ft. of torque and tighten the set screw until you have sufficient crush on the adapters o-ring. Congratulations! You're done.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy