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Your cart is empty.If you manufacture your own aluminum radiator, the Mishimoto aluminum coolant fill neck is a must-have. The Mishimoto aluminum coolant fill necks are CNC machined and ready to be welded for use with your custom project. These aluminum fill necks are compatible with our Mishimoto radiator caps. The large Mishimoto CNC machined aluminum fill neck is 42 mm and includes a screw-in nipple for overflow.
Austin
2025-08-01 15:44:13
Very well made part. Couldn’t find the dimensions I was looking for when purchasing so I’ve attached photos with all the primary dimensions.Does for Stant radiator caps.
Joe B
2025-07-06 16:59:24
Good quality
Customer
2025-07-05 11:40:47
Price. It looks good. Making radiator over flow can for r.v.
Heath Burdette
2025-06-21 17:05:47
3 stars because the filler neck itself welded decently. When I was trying to remove the overflow fitting (threaded with sealant like normal) to switch from the pre-installed barbed fitting to an AN fitting, the fitting cracked off and pulled the threads out for the new fitting. Had to scrap and put a better quality filler neck on which was a major delay for the project. *Even when installing a hose onto barbed fitting, be careful! It will crack off!*
B Family
2025-06-12 17:44:21
Work great. Looks great. Very good are great product. I tig it in and it has been great.
Atseicah
2025-05-23 11:34:20
I bought an intercooler for cheap from a friend and it needed a new fill neck. The old one was crushed when his front-clip was shipped. It wasn't in stock so Amazon had to special order it. High quality peice and was welded professionally buy a local aluminum fabricator. Works awesome.
Kouper Mcquigg
2025-04-09 18:51:34
this fill neck worked perfect for what I needed for my mishimoto radiator.
GEORGE WELCH
2024-12-18 16:20:27
GREAT
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