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Thread: part #'s needed

  1. #1
    Join Date
    May 2002
    Location
    Minnesota
    Posts
    45

    Default part #'s needed

    Anyone have the part #'s for the hi-flow water pump and Dual thermostat housing? Going to look them up on GM Parts Direct and i dont know the #'s. Thanks
    94 k2500 ext cab, short box 6.5t, High idle switch
    Manual glow switch, SS Diesel 3" downpipe and crossover, High output cooling mods, Homemade turbomaster, Isspro - Boost, Pyro, Tranny temp guages in a 3 pod pillar mount,



    Bob Decker

  2. #2
    Join Date
    Jan 2006
    Location
    Boissevain, MB., Canada
    Posts
    187

    Default part #

    They are listed in 'Book', but here they are : water cross over housing GM # 12553405, Double Thermostat outlet housing GM # 12553451, Hi-flow water pump GM # 12534772 the 6.5L Turbo Diesel book is worth weight in 'gold' for info on this motor.
    '95 GMC K2500, "Bullet"Ex. cab short.4X4, 377,000kl on truck, 177,000kl on AMG engine, auto. 3:73 Ltd. slip, FSD remote mount, OPS relay,AFE air IN, Kennedy 3 1/2" OUT . '83 F250 HD3/4 " Robert The Red Ford"4x4 460, 3:55'posi . 2005 GMC : G WHIZ" crew short box, 5.3, 4:10. , '88 Bronco II 4X4, '95 141,000kl Ford F150 EX. short box, '92 "Toy" 4 runner 273000kl ,'63 Mercury 45000miles !!!! Auto insurance co. is my mistress !!!

  3. #3
    Join Date
    May 2002
    Location
    Minnesota
    Posts
    45

    Default

    Artwork,
    Thanks. What " Book " ?
    94 k2500 ext cab, short box 6.5t, High idle switch
    Manual glow switch, SS Diesel 3" downpipe and crossover, High output cooling mods, Homemade turbomaster, Isspro - Boost, Pyro, Tranny temp guages in a 3 pod pillar mount,



    Bob Decker

  4. #4
    Join Date
    May 2002
    Location
    Minnesota
    Posts
    45

    Default

    Artwork,
    #1253451 and #12534772 came back as unknown #'s
    94 k2500 ext cab, short box 6.5t, High idle switch
    Manual glow switch, SS Diesel 3" downpipe and crossover, High output cooling mods, Homemade turbomaster, Isspro - Boost, Pyro, Tranny temp guages in a 3 pod pillar mount,



    Bob Decker

  5. #5
    Join Date
    Mar 2000
    Location
    South Central Pennsylvania, USA
    Posts
    2,697

    Default

    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  6. #6
    Join Date
    Apr 2000
    Location
    IL
    Posts
    810

    Default

    I'm finding the new HO water pump has changed from 12534772 to 88894036. Not sure what causes failures, but I've got a leak and only 60k on the HO pump I installed 3 years ago.
    350k+ miles of 6.2/6.5 experience

  7. #7
    Join Date
    Mar 2000
    Location
    South Central Pennsylvania, USA
    Posts
    2,697

    Default

    Just to try to update the information, the following part numbers are good:

    #12553405 - x-over housing (listed as thermostat housing on gmpartsdirect)
    #88894036 - h.o. water pump

    The number given for the outlet housing (#12553451) doesn't turn anything up.

    Again, gmpartsdirect lists a #12564276 as the water outlet and/or inlet for models with the h.o. pump. Is that what I'd be looking for?
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  8. #8
    Join Date
    Mar 2000
    Location
    Loyal WI US
    Posts
    10,792

    Default

    Or just order the kit with all the right parts and no insane handling fees...
    Kennedy Diesel-owner
    More than just a salesman-I use and test the products that I sell on a daily basis!
    Superflow Lie Detector in house
    2002 Chev K2500HD D/A CC Long LT 11.77@ 124mph at 7700# fuel only-e.t. needs help
    2005 Chev K3500SRW D/A CC Long LT(SOLD)
    2007 Chev K2500 Classic EC Short LT (Sold)
    2012 GMC K3500SRW D/A CC Long LTZ Happy Birthday to me! Built 1 working day after my birthday and delivered 7 days later.
    2016 GMC K3500SRW D/A CC short LTZ

    Custom tuning in house using EFI Live tuning software!

  9. #9
    Join Date
    Apr 2002
    Location
    PA
    Posts
    302

    Default

    gmpartsdirect.com is misleading. You aren't getting parts right from GM, the site belongs to a dealership in North Carolina. I think the dealership skews its prices to look appeasing, but they make up for their low prices with their shipping & handling fees as Kennedy said.

    I get a break at my local Chevy dealership for buying parts there on a regular basis. I make out better staying local than if I were to use gmpartsdirect.com.
    1994 K1500 Blazer: 6.5L TD/4L80E: 'F' intake: Kennedy chip: Kennedy 3.5" exhaust: Heath Turbo-Master: 2/0 battery cables: Lubrication Specialist oil cooler lines: Fumoto drain valve: Amsoil dual bypass remote oil filter kit: Fluidampr: 137k miles

  10. #10
    Join Date
    Mar 2000
    Location
    South Central Pennsylvania, USA
    Posts
    2,697

    Default

    I understand the issues with gmpartsdirect - that it is a dealer and the shipping costs. But it is the best way to look up parts that I've found on the net so I was using it to confirm part numbers. I've got a line on some of the parts used, so I may try to assemble what I need rather than go the route of the complete kit.

    I think this is the list:
    12553405 Housing - Crossover Manifold
    15683910 Radiator Hose Lower
    12564276 Water Outlet
    15977350 Radiator Hose Upper
    10243629 Hose
    24504922 Thermostat Water Hsg Outlet Bolts
    15010202 Engine Fan Blade (from Duramax - fits 97 Fan Clutch)
    15022302 Engine Air Cooling Fan Clutch (1997 VIN S 6.5 Diesel)
    '94 GMC 6.5TD K1500 4L80E 2-Door Yukon SLE 221K
    '93 Chevrolet 6.5TD K2500HD NV4500 Std. Cab Longbed 187K
    '85 Toyota 22R RN60 4x4 Std. Cab Shortbed 178K (Currently retired for rebuild)
    Diesel Page Member #2423

  11. #11
    Join Date
    Jan 2006
    Location
    Louisville Kentucky
    Posts
    85

    Default

    Quote Originally Posted by Kennedy
    Or just order the kit with all the right parts and no insane handling fees...
    There is another diesel site out there where a guy did some research and tried to buy all the individual parts seperately in attempt to save money. He could not. You can not beat the prices that places such as Kennedy diesel offers.
    1994 chevy turbo diesel 3500 4WD extended cab.
    4 inch Pinnacle exhaust from the turbo back
    Kennedy OPS harness (yet to be installed)
    FSD cooler (yet to be installed, planning on placing in fender to pick up air from intake)
    Bet top extendable mirrors.

  12. #12
    Join Date
    Jun 2020
    Location
    Spokane
    Posts
    8

    Default

    The fan blade fits the clutch but how did you overcome the additional inch in diameter for the fan. BTW, I am trying to replace my 1996 Chevy K2500 6.5L diesel cooling fan and clutch. I have found that the GMB 930-2020 and 930-2070 (exact replacement) clutches both fit my truck, but am unable to find a fan that fits either. I have checked all wrecking yards within 100 miles and trying to avoid going 100+ miles to find one, and would love to find a brand new replacement.

  13. #13
    Join Date
    Apr 2001
    Location
    CA
    Posts
    13,573

    Default

    The extra inch diameter is only 1/2" radius, or 1/2" closer to the shroud. It fits (should still have about an inch clearance), but if your engine/tranny mounts are worn out, it may be closer than comfortable, and it changes with engine torque. Body lifts also cause issues due to raising the body away from the frame. The engine is mounted to the frame, while the cooling stack is mounted to the body. Better for the suspension, not so much for the remainder.
    1985 Blazer 6.2
    2001 GMC 2500HD D/A
    dmaxmaverick@thedieselpage.com

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