Allis 185

There’s a spot on the right side of the block towards the rear with a plate and two bolts. Agco sells a factory one for that location.

Yes, that Kats number fits my AC185 and 200. Nice thing is it's 1000W another brand is only around 600W. I can't think of brand or number.

AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B,

Nice tractor!Looks like the one you have is above and to the right of the starter.The one I'm thinking of goes a little farther back in place of the plate towards rear of engine and above starter.

Lynn Marshall

Thanks. I will never forget the day it arrived at our farm, on the Dealers truck. Over time, rear tires replaced, new seat exactly the same, front tires upgraded from 7.50 and rims reversed, paint job and decals, every thing else factory (a few filters/muffler along the way).

Paul Samwel

I can see the access port you are planning to use. The block heater will cause convective flow in the coolant passages to warm up the engine metal everywhere the passages go. The engine metal will conduct the heat really well in all directions. One port location might be slightly better for overall heat transfer result, but the top of the engine, and the combustion chambers should warm up plenty to achieve a good starting condition.

Other readers might have more info to share on best location for the heater element

My experience with block heaters, like the one on my 185, and the external tank type on my D17 III Diesel, is they work very well, heat the engine up to very very hot (close to operating temp) so starting is like a hot day in July!!!

Good luck with your install

1963 D17D Series III. 1965 D15 Series II. 1965 D17 Series IV. 1975 185. 1978 716H. 1979 716H. 1965 780 Harvester/1R&DC. 1957 Model 73 SC 4 Furrow Plow

That is probably a Stanley brand. The outlet is centered and also smaller in diameter than the OEM Nelson, which isn't available these days, unless A & W tractor Alex still has some.

	This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
	The Forum	Parts and Services	Unofficial Allis Store	Tractor Shows	Serial Numbers	History

Author	Message Topic Search Topic Options Post Reply Create New Topic Printable Version Translate Topic
PaulSamwel Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 10 Jan 2026 Location: washinton Points: 8	Post Options Post Reply Quote PaulSamwel Report Post Thanks(0) Quote Reply Topic: Allis 185 Posted: 16 hours 25 minutes ago at 2:21pm
	Does anyone have a handy part number for a block heater that'll fit in where a soft plug goes?Thanks

Sponsored Links

Gary(VA) Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 13 Sep 2009 Location: Troutville, VA Points: 351	Post Options Post Reply Quote Gary(VA) Report Post Thanks(1) Quote Reply Posted: 16 hours 19 minutes ago at 2:27pm
	There’s a spot on the right side of the block towards the rear with a plate and two bolts. Agco sells a factory one for that location.

PaulSamwel Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 10 Jan 2026 Location: washinton Points: 8	Post Options Post Reply Quote PaulSamwel Report Post Thanks(0) Quote Reply Posted: 16 hours 14 minutes ago at 2:32pm
	Thanks,found a KATS 30208 that looks like it will work.

KJCHRIS Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 21 Dec 2015 Location: WC Iowa Points: 988	Post Options Post Reply Quote KJCHRIS Report Post Thanks(0) Quote Reply Posted: 15 hours 58 minutes ago at 2:48pm
	Yes, that Kats number fits my AC185 and 200. Nice thing is it's 1000W another brand is only around 600W. I can't think of brand or number.
	AC 200, CAH, AC185D bareback, AC 180D bareback, D17 III, WF. D17 Blackbar grill, NF. D15 SFW. Case 1175 CAH, Bobcat 543B,

Leadoff Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 14 Oct 2016 Location: Calgary Points: 308	Post Options Post Reply Quote Leadoff Report Post Thanks(0) Quote Reply Posted: 13 hours 34 minutes ago at 5:12pm
	PaulSamwel Here is my 185 which has the block heater installed on the RH side of the engine left of the fuel filter. The tractor was delivered new to our farm in 1975 with the block heater installed, probably by the dealer. Not a great close up pic of the area, but you can see the electric cord hanging down just in front of the starter Hope this helps with your project
	1963 D17D Series III. 1965 D15 Series II. 1965 D17 Series IV. 1975 185. 1978 716H. 1979 716H. 1965 780 Harvester/1R&DC. 1957 Model 73 SC 4 Furrow Plow

PaulSamwel Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 10 Jan 2026 Location: washinton Points: 8	Post Options Post Reply Quote PaulSamwel Report Post Thanks(0) Quote Reply Posted: 13 hours 3 minutes ago at 5:43pm
	Nice tractor!Looks like the one you have is above and to the right of the starter.The one I'm thinking of goes a little farther back in place of the plate towards rear of engine and above starter.

Lynn Marshall Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 13 Sep 2009 Location: Dana, Iowa Points: 2455	Post Options Post Reply Quote Lynn Marshall Report Post Thanks(0) Quote Reply Posted: 11 hours 22 minutes ago at 7:24pm
	Super nice 185 and incredibly close to looking like it just came off of the Milwaukee truck.

Leadoff Members Profile Send Private Message Find Members Posts Add to Buddy List Silver Level Joined: 14 Oct 2016 Location: Calgary Points: 308	Post Options Post Reply Quote Leadoff Report Post Thanks(0) Quote Reply Posted: 10 hours 15 minutes ago at 8:31pm
	Lynn Marshall Thanks. I will never forget the day it arrived at our farm, on the Dealers truck. Over time, rear tires replaced, new seat exactly the same, front tires upgraded from 7.50 and rims reversed, paint job and decals, every thing else factory (a few filters/muffler along the way). Paul Samwel I can see the access port you are planning to use. The block heater will cause convective flow in the coolant passages to warm up the engine metal everywhere the passages go. The engine metal will conduct the heat really well in all directions. One port location might be slightly better for overall heat transfer result, but the top of the engine, and the combustion chambers should warm up plenty to achieve a good starting condition. Other readers might have more info to share on best location for the heater element My experience with block heaters, like the one on my 185, and the external tank type on my D17 III Diesel, is they work very well, heat the engine up to very very hot (close to operating temp) so starting is like a hot day in July!!! Good luck with your install
	1963 D17D Series III. 1965 D15 Series II. 1965 D17 Series IV. 1975 185. 1978 716H. 1979 716H. 1965 780 Harvester/1R&DC. 1957 Model 73 SC 4 Furrow Plow

DougG Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Joined: 20 Sep 2009 Location: Mo Points: 8413	Post Options Post Reply Quote DougG Report Post Thanks(0) Quote Reply Posted: 22 minutes ago at 6:24am
	Very nice tractor,, at some point please put the right muffler on it,,, One Eightys and 185,s have it coming out one side,, just a peevee, of mine - not bashing,,

DrAllis Members Profile Send Private Message Find Members Posts Add to Buddy List Orange Level Access Joined: 12 Sep 2009 Points: 22464	Post Options Post Reply Quote DrAllis Report Post Thanks(0) Quote Reply Posted: 7 minutes ago at 6:39am
	That is probably a Stanley brand. The outlet is centered and also smaller in diameter than the OEM Nelson, which isn't available these days, unless A & W tractor Alex still has some.