PRODUCT DETAILS
TracTuff RBB/RBC Water Neck Flange for K-Series Engines
The TracTuff RBB/RBC Water Neck Flange is a precision-machined billet aluminum component designed for enthusiasts building or customizing K-series engine cooling setups. Compatible with K20Z3, K24A, K24A2, K24A4, K24A8, and K20Z4 engines, this flange allows users to add the specific type of fitting required for their setup, providing flexibility without the need to purchase a fully assembled water neck. It’s perfect for setups using -16 ORB to 1.25" standard hose fittings or -16 ORB to -16 AN fittings for AN radiator hoses.
Crafted from high-quality 6061-T6 aluminum, the flange features a -16 ORB outlet port and a 1/2" NPT heater port to accommodate a heater hose or plug. The hardware kit includes four M8 socket head bolts, a 90° heater hose fitting, a 1/2" NPT plug, and two o-rings for a secure and leak-free installation. This flange is sold separately from the fittings, giving enthusiasts full control over their cooling system configuration.
Key Features
- Direct fit for K20Z3, K24A, K24A2, K24A4, K24A8, and K20Z4 engines
- Beautifully machined from 6061-T6 aluminum for strength and durability
- Includes -16 ORB outlet port and 1/2" NPT heater port
- Hardware kit included for secure installation
- Allows use of custom fittings such as -16 ORB to 1.25" hose or -16 ORB to -16 AN
- Flange sold separately; fittings sold separately for full customization
Compatibility
- K20Z3
- K24A, K24A2, K24A4, K24A8
- Any engine using RAA, RBB, RBC, or RSP cylinder head casting
The TracTuff RBB/RBC Water Neck Flange provides enthusiasts with the freedom to design their ideal cooling setup, ensuring reliable flow, high-quality construction, and adaptability for any custom or performance-oriented K-series build.