Hybrid Racing -6 AN Water Pump Port Fitting - K20A2/K20Z

HYB-WPP-01-17 / HYB-WPP-01-18 - Hybrid Racing -6 AN Water Pump Port Fitting - K20A2/K20Z

Convert the factory oil-cooler coolant port to a clean -6 AN connection

The K20A2, K20Z1, and K20Z3 water pump uses a barbed coolant connection for the factory oil-cooler circuit. Hybrid Racing's water pump port fitting replaces that barb with a -6 AN outlet, allowing a custom oil-cooler system or fully AN-plumbed engine bay to use a serviceable mechanical connection instead of a clamped rubber hose.

Each fitting is machined for a precise fit, finished in black anodizing, and sealed with an O-ring for a watertight connection without thread sealant. The supplied yellow-zinc mounting bolt completes the installation.

Choose the Correct Fitting Style

• Straight (HYB-WPP-01-17): Works on either the feed or return side of the oil-cooler circuit
• 90 Degree (HYB-WPP-01-18): Works on the return side only
• The 90-degree fitting will contact the engine block if installed on the feed side

Key Features:

• Converts the factory water-pump oil-cooler port to -6 AN
• Compatible with K20A2, K20Z1, and K20Z3 water pumps
• Available in Straight and 90 Degree styles
• O-ring seal provides a reliable watertight connection
• Black anodized finish resists corrosion
• Includes a yellow-zinc mounting bolt
• Works in front-wheel-drive and rear-wheel-drive K-series applications

Vehicle Fitment:

• 2002-2006 Acura RSX Type-S (K20A2/K20Z1)
• 2006-2011 Honda Civic Si (K20Z3)

Also compatible with swaps using these engines or the applicable factory water pump with an oil-cooler coolant port.

What's Included:

• (1) -6 AN water pump port fitting in the selected style
• (1) O-ring seal
• (1) Yellow-zinc mounting bolt

Whether you are building a custom oil-cooler circuit, tucking an engine bay, or standardizing your cooling system with AN plumbing, this fitting replaces the remaining factory barb with a compact and reusable connection.