Alper Motorsports -4 AN Black LS Steam Vent Fitting For LS1 LS2 LS6 LS7 LM7 LQ9

Building an LS motor?

Don't forget the cooling system.

This is an Alper Motorsports steam vent fitting, designed to plumb your coolant crossover correctly.

It's a -4 AN size, so it'll work with standard AN lines.

The fitting is CNC machined and has a sleek anodized black finish.

It's a performance/custom fitment for LS-series engines like the LS1, LS2, LS6, LS7, LM7, and LQ9.

The manufacturer part number is 81203.

It comes with the mounting hardware you need.

A small but essential piece for a clean, leak-free LS swap or build.