Farm Equipment - 7040 radiator hose hookups

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7040 radiator hose hookups

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=212304
Printed Date: 22 Sep 2026 at 4:26pm
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Topic: 7040 radiator hose hookups

Posted By: jazzsuds
Subject: 7040 radiator hose hookups
Date Posted: 21 Sep 2026 at 10:36pm

I justbought an aluminum radiator replacement and cannot find the part numbers and size of the two fittings fir hose hookups on the engine side of the radiator. Can anyone help?

Replies:

Posted By: DrAllis
Date Posted: 22 Sep 2026 at 7:55am

You don't have the two adapter fittings from your old radiator ?? I think the hose connection is 7/8" JIC 37 degree male threads and the radiator hole is either 1/2" male pipe or 3/8" male pipe.

Posted By: 8070nc
Date Posted: 22 Sep 2026 at 8:35am

By whats been said more than likely the fitting in the radiator is 1/2 female NPT. The fitting that screws into it is # 8 male JIC x 1/2 male NPT

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1984 80780
1957 D14
DES 300 with 25000 engine
616 tractor

Posted By: DrAllis
Date Posted: 22 Sep 2026 at 8:55am

My chart says #10, but I'm guessing at the size of the hose connection fitting.

Posted By: jazzsuds
Date Posted: 22 Sep 2026 at 10:43am

Thanks folks