Motorcraft Lower Radiator Hose NO -Oil Cooler
- Thread starter Jamie V
- Start date
There would have to be something wrong with the system to collapse the hose with our big radiators. It's a closed system (it's returning water to the radiator at exactly the same rate as the pump draws it out), it's under pressure when it's warmed up, and the radiator will flow a ton of liquid. The hose is full of water, which, for all intents and purposes, is a solid. If the pump is able to evacuate the pressurized hose, that means there's a godsawful restriction in the radiator.
You don't need a spring in the lower hose in a properly operating system. As Steve said, it's only there for the factory fill because a vacuum is applied to the system so they don't have to go through the heat cycle and refill steps that we do. They were also necessary when cooling systems didn't use overflow reservoirs because the lower hose would collapse when the system cooled due to the air in the system. It won't hurt anything for it to be there, but it's also not something you should lose any sleep over if you buy a hose that doesn't have one.
All that said, I pulled the spring out of the factory hose and put it in the replacement when I eliminated the oil cooler. :hh:
You don't need a spring in the lower hose in a properly operating system. As Steve said, it's only there for the factory fill because a vacuum is applied to the system so they don't have to go through the heat cycle and refill steps that we do. They were also necessary when cooling systems didn't use overflow reservoirs because the lower hose would collapse when the system cooled due to the air in the system. It won't hurt anything for it to be there, but it's also not something you should lose any sleep over if you buy a hose that doesn't have one.
All that said, I pulled the spring out of the factory hose and put it in the replacement when I eliminated the oil cooler. :hh:
Jamie: Is this the hose you bought on eBay that didn’t fit?
Did the F2TZ-8286-G KM-2411 turn out to be short and for "with " oil cooler also?? If so that crazy because it shows for 5.0 and 5.8 and if I remember correctly 5.0s never had oil coolers!
Reason I ask is that F5TZ-8286-B or Motorcraft KM-2923 shows up in Dayco's cross-reference search as Dayco #71710 which is the one you said was an exact fit. So I think Lowetlx got it right in post #8 ^^^
Was hoping you bought that one and could confirm so I could add to parts list. I've got all the rest...
| Cooling, hose, radiator, lower (with oil cooler), 93, 21.2” | F4TZ-8286-C | KM-2844 | Napa NBH-9174 Gates 22541 ACDelco 22375M |
| Cooling, hose, radiator, lower (with oil cooler) oil cooler adapter hose, w/SVT pkg, 1993 | F3TZ-6K741-A | Napa NBH-9035 Gates 22402 ACDelco 20381S | |
| Cooling, hose, radiator, lower (with oil cooler), 94-95, 21.1” | F5TZ-8286-C | KM-2924 | Dayco 71732 Napa NBH-8810 Gates 22143 ACDelco 24318L |
| Cooling, hose, radiator, lower (with oil cooler) oil cooler adapter hose, w/SVT pkg, 1994-95 | F4TZ-6K741-A | Dayco 71735 Napa NBH-9034 Gates 22401 ACDelco 20380S | |
| Cooling, hose, radiator, lower (without oil cooler), 27.3” / 27-5/16” | F5TZ-8286-B (???) | KM-2923 (???) | Dayco 71710 Napa NBH-7927 Gates 21216 ACDelco 26071X |
| Cooling, hose, radiator, upper (OEM) | F2TZ-8260-C | KM-2360 | Dayco 72691 Gates 21631 ACDelco 26140X |
| Cooling, hose, radiator, upper (for 90-deg outlet) | - | - | Dayco 70805 Gates 21074 ACDelco 24079 |
Jamie V
Well-known member
One more time: Dayco 71710 is a perfect fit fit my Gen 1 Lightning w/o oil cooler. No trimming.
Steve83
Bronco Guru
Top is the '93 F250 5.8L; bottom is the '93 Bronco 5.8L:
(phone app link)
This is what RockAuto says the 71040 replaces:
E0TA8B273CA, E0TZ8286C, E2TA8B273RB, E2TA8B273RC, E2TA8N273RB, E2TZ8286C, E5TA8B273MA, E5TZ8286B, E5TZ8620B, E7TA8B273FA, E7TZ8286A, E9TA8B273VA, F0TZ8286D, F27A8B273NA, F2TA8B273NA, F2TZ8286G
This is the list for Gates 21216, which is one of the choices for my '93 F250 5.8L, and it includes the PN on its original hose:
1346495, 7927, CH1216, E0TA8286CC, E0TA8B273CA, E0TA8B273CB, E0TA8B273CD, E0TA8B273CE, E0TZ8286C, E2TA8B273RB, E2TA8B273RC, E2TZ8286C, E4TZ8286B, E5TA8B273MA, E5TZ8286B, E7TA8286FA, E7TA8B273FA, E7TZ8286A, E9TA8B273VA, F0TZ8286D, F2TA8B273NA, F2TE8B273NA, F2TZ8286D, F2TZ8286G, F3TA8B273NA, F4TA8B273ED, F4TA8B273RA, F4TA8B273RC, F5TA8B273YC, F5TA8B273YD, F5TZ8286B, MH1216
Note that the 2nd list contains most of the first, implying that all those PNs will work.
(phone app link)
This is what RockAuto says the 71040 replaces:
E0TA8B273CA, E0TZ8286C, E2TA8B273RB, E2TA8B273RC, E2TA8N273RB, E2TZ8286C, E5TA8B273MA, E5TZ8286B, E5TZ8620B, E7TA8B273FA, E7TZ8286A, E9TA8B273VA, F0TZ8286D, F27A8B273NA, F2TA8B273NA, F2TZ8286G
This is the list for Gates 21216, which is one of the choices for my '93 F250 5.8L, and it includes the PN on its original hose:
1346495, 7927, CH1216, E0TA8286CC, E0TA8B273CA, E0TA8B273CB, E0TA8B273CD, E0TA8B273CE, E0TZ8286C, E2TA8B273RB, E2TA8B273RC, E2TZ8286C, E4TZ8286B, E5TA8B273MA, E5TZ8286B, E7TA8286FA, E7TA8B273FA, E7TZ8286A, E9TA8B273VA, F0TZ8286D, F2TA8B273NA, F2TE8B273NA, F2TZ8286D, F2TZ8286G, F3TA8B273NA, F4TA8B273ED, F4TA8B273RA, F4TA8B273RC, F5TA8B273YC, F5TA8B273YD, F5TZ8286B, MH1216
Note that the 2nd list contains most of the first, implying that all those PNs will work.
Jamie V
Well-known member
Steve83
Bronco Guru
Interesting that, even though the PNs are different, both hoses are marked "Motorcraft DF". I wonder if that identifies all OE hoses that fit this application. And I wonder why there were so many OE PNs; what was different about each one? And why were there 2 base PNs: 8B273, and 8286?
BTW
Why are you replacing it? It looks like it's still serviceable & clean (with a little scrubbing). Is there some damage not visible in the pic?
BTW
Why are you replacing it? It looks like it's still serviceable & clean (with a little scrubbing). Is there some damage not visible in the pic?