Mazworx SR20 RWD Billet Water Neck Set (Without Thermostat Housing)

Upgrade your Nissan SR20 RWD engine’s cooling system with the Mazworx SR20 RWD Billet Water Neck Set, expertly CNC machined from durable T-6061 billet aluminum. Designed specifically for S13, S14, and S15 chassis equipped with VVL or VE heads on RWD blocks, this water neck set provides a precise replacement for the factory component (thermostat housing not included, requiring removal of the OEM thermostat housing).

This billet water neck improves coolant flow efficiency and enhances overall fitment, aiding in better engine cooling performance. The component features convenient 1/8″ NPT and 1/4″ NPT ports located on the top and front outlets respectively, accommodating various sensor or auxiliary line connections typically needed for cooling system customization or monitoring.

Key Features

• Constructed from high-quality T-6061 billet aluminum for strength and durability
• Machined specifically for the Nissan SR20 engine with RWD configuration
• Includes ports for versatile plumbing: 1/8″ NPT on the top and 1/4″ NPT on the front
• Machined to fit -16AN fittings to support aftermarket cooling system components
• Available in multiple finish options: Purple, Black, and natural Billet

This water neck set is an ideal upgrade for enthusiasts and professionals seeking an OEM replacement that allows improved coolant flow and enhanced customization options. Please note that installation requires the removal of your factory thermostat housing, and the product does not include a thermostat housing unit.