Chrysler V8 Chrome Zinc Straight Up Gasket Style Water Neck

• Straight-up chrome zinc outlet routes the upper radiator hose cleanly

• Gasket seal and mounting hardware included for straightforward installation

• Zinc construction with chrome finish resists corrosion and handles coolant heat

• Fixed, low-profile outlet design keeps a clean look at the thermostat housing

This straight-up water neck creates the coolant outlet connection between the thermostat housing and upper radiator hose on Chrysler/Mopar V8 engines, with a chrome finish over zinc construction built to handle coolant system heat and pressure. A gasket seal is included, along with mounting hardware, for a complete installation.

This water neck is built for Chrysler LA small block (318-360 CID), B big block (383-400 CID), and RB big block (413-440 CID, including the 426 Wedge) engines only. Confirm your engine family and thermostat housing bolt pattern before ordering, since Chrysler small block and big block housings differ in dimensions even where CID ranges are close.

This outlet is straight-up and does not swivel; hose alignment is fixed at installation.

Engine Applications
Compatible with Chrysler LA small block V8s (318, 360 CID), B big block V8s (383, 400 CID), and RB big block V8s (413, 426 "Wedge," 440 CID). Commonly used in classic muscle car and truck restorations, street rods, and custom cooling system builds using a matching thermostat housing bolt pattern.

Installation
Confirm your thermostat housing bolt pattern matches before installing, since Chrysler small block (LA) and big block (B/RB) housings are not interchangeable despite both using this straight-up outlet style. The included gasket seals against the housing face; because this outlet is fixed rather than swiveling, hose alignment is set by the neck's angle rather than by rotating it after mounting.

What engines does this water neck fit?
This water neck fits Chrysler LA Small Block V8s (318 and 360 CID), B Big Block V8s (383 and 400 CID), and RB Big Block V8s (413, 426 Wedge, and 440 CID).

Does this fit a 273 or 340 Mopar small block?
Fitment for the 273 and 340 CID LA Small Blocks is not currently confirmed in the published specifications. Check with TSP before ordering for either of these engines.

What's the difference between the LA small block and B/RB big block versions of this fitment?
The listing covers compatible LA Small Block and B/RB Big Block applications with this water neck. Because thermostat housing configurations can vary by engine family and application, verify your engine and mounting pattern before ordering.

Does this water neck swivel?
No — this water neck has a fixed, straight-up outlet and does not swivel. Radiator-hose routing is determined by the outlet position once installed.

Does this include a gasket or an O-ring?
This version uses and includes a gasket-style seal, not an O-ring.

Is this suitable for a classic Mopar restoration?
Yes — the chrome-over-zinc finish and straight-up outlet design provide a traditional appearance suited to classic Mopar and restoration-style engine bays.