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Workhorse Parts Xref W Series
As many of you RV'ers know Workhorse has their own Part Numbering system even though most of the parts are available from a GM dealer, other OEM's or from a autoparts house. So, if you have purchased any parts from any other source other than Workhorse and have the OEM part number and discription please leave me an EMAIL with the informantion and I will add to this section.
Note - This cross reference file is a collection of parts numbers supplied by the members of IRV2 and myself. The Workhorse numbers have been added for reference and may vary as I have seen multiple parts numbers for the same part.
I have added links to my photos of the various parts referenced here. So, if
you want to see a photo of the part in question just click on the highlighted
part and it will open a new tab or window.
Note - The photo's are for reference only and may not depict the actual part.
Any updates or corrections please Email me.
1. Brake Parts 2. Cooling System 3. Engine Parts
4. Filters 5. Suspension Parts 6. Miscellaneous Parts
7. A/C Parts
Brake Parts
| Brake parts are for the W20/W22 unless otherwise specified. | |||
| Part # | Description | Supplier | |
| W0000036 | Master Cylinder | Workhorse | |
| 10-590R | Master Cylinder | Mills Supply | |
| W8001709 | ABS Sensor | Workhorse | |
| Wabco | ABS Sensor | OEM-Engineering | |
| W8000363 | Brake Pad Kit | Workhorse | |
| BXMKD786 | Brake Pads 73mm-66mm | Bendix | |
| PFH078610 | Brake Pads 73mm-66mm | Performance Friction | |
| D786 | Brake Pads | Ryder Fleet | |
| W8002188 | Rotor | Workhorse | |
| 2594596C1 | Rotor | International | |
| 23-123572-004 | Rotor | Meritor | |
| RB-83015 | Rotor | Brake Performance | |
| Notes: 1) 23-123572-004 replaced 23-123572-002 2) 23-123572-004 replaced 4C4Z-2C0-26AA (Ford part #) 3) Part # RB-83015 is for the W20 Chassis. The W20/W22 share the same brake parts. Also, be aware that the rotor has only 6 mounting holes and should not be confused with the rim having 8 mounting holes. Rotor RB-83015 is Brake Performance's" Premium Dimpled & Slotted Rotors". | |||
| W80006461 | Caliper ASM | Workhorse | |
| L55849PM | Caliper | Ryder Fleet | |
| 2593419C91 | Caliper | International | |
| 4C4Z-2B120-MB | Caliper | Ford | |
| MBIRH55849x | Caliper | NAPA | |
| 141-83003 | Caliper | Centric | |
| Part # W8000348 was replaced by W8006461. | |||
| You can purchase a complete Bosch
66mm caliper part # 141-83003 from: Brake Reliners at 1-303-424-9037 and ask for Todd. | |||
| You can purchase a complete Bosch
66mm caliper (4153269) complete with hardwware and a set of 786 pads for
$135 plus S/H from: BW Brakes 1-866-451-0195 Owner - Mark Ladika Email - mark@bwbrake.com | |||
| 73mm Caliper Upgrade Parts. | |||
| 18FR1514 | Caliper(4) | AC Delco | |
| 2501845C91 | Caliper Tie Bar (2) | Navstar | |
| 17D786M | Brake Pad (4) | AC Delco | |
| Note - The 73mm pads are thicker than the 66mm pads, but they are interchangeable. | |||
| E11752 | Caliper Rebuild Kit | MFGR-Euclid Industries | |
| E11751 | Caliper Pistons | MFGR-Euclid Industries | |
| The MFGR-Euclid Industries, Cleveland. They do not sell or distribute. You have to go through a dealer. | |||
| 4C4Z-2C150-AB | Caliper Pin Kit | Ford | |
| W0000274 | Left Front Brake Hose | Workhorse | |
| W0000275 | Right Front Brake Hose | Workhorse | |
| One source that is cheaper than Workhorse ($67.62 per brake hose) is Georgia Commercial Vehicles, Marietta Georgia. Phone # 770-419-9262 . | |||
Cooling System
| Part # | Description | Supplier | |
| W8000530 | Water Pump | Workhorse | |
| 12558870 | Water Pump (Casting #) | GM OEM | |
| 252-783 | Water Pump | AC Delco | |
| 130-7090 | Water Pump | GMB | |
| 131-156 | Thermostat | AC Delco | 131-121 | Thermostat | AC Delco | 3329 | Thermostat | Gates |
| 14948 | Thermostat | Stant | 15898 | Thermostat - 180 Degree | Autozone |
131-156 replaces 131-143, 12581595 and 12600171. | |||
| W8800752 | Radiator Cap-15 Lb | Workhorse | |
| 10409635 | RC33 Radiator Cap-15 Lb | AC Delco | |
| 25661994 | RC81 Radiator Cap-15 Lb | AC Delco | |
| ???????? | Radiator Cap-16 Lb | OEM | |
| Notes: 1) The RC33 part has been discontinued and has been replaced by RC81. 2) In a pinch almost any brand 15 or 16 lb radiator cap will work. | |||
| W8800218 | Upper Radiator Hose | Workhorse | |
| 26163X | Upper Radiator Hose | AC Delco | |
| 8441 | Upper Radiator Hose | NAPA | |
| 465-21750 | Upper Radiator Hose | Gates | |
| W8800219 | Lower Radiator Hose | Workhorse | |
| 24397L | Lower Radiator Hose | AC Delco | |
| 9058 | Lower Radiator Hose | NAPA | |
| 465-22425 | Lower Radiator Hose | Gates | |
| W8000087 | Aux Dual Fans | Workhorse | |
| 3680 | Aux Dual Fans | Hayden | |
| 226112 | Aux Dual Fans | Hayden/Advance Auto Parts | |
| Note - Although the Hayden 3680 is NOT a
direct replacement it can be used to repair the inop fan.
See Aux Fan Replacemnt for more info on 226112. | |||
Engine Parts
| Part # | Description | Supplier | |
| 8894269 | 8.1L Spark Plug Wire Set | GM/AC Delco | |
| 79286 | Taylor 409 Wires-Standard | Taylor Vertex | |
| 99615 | Taylor 409 Wires-Extremes | Taylor Vertex | |
| W8000518 | Spark Plug - .060 Stock | Workhorse | |
| 41-983 | Spark Plug-.060 Stock | AC Delco | |
| 41-993 | Spark Plug-.045 UltraPower | AC Delco/Oemy's | |
| W8000524 | O2 Sensor | Workhorse | |
| 25312184 | O2 Sensor | AC Delco | |
| 234-4012 | O2 Sensor | Denso | |
| The O2 sensor is a 4 wire heated sensor. The following part numbers may also apply - 2533812, 2131148 & 12572706. | |||
| W8000513 | MAF Sensor | Workhorse | |
| 25318411 | MAF Sensor | Delphi | |
| This is an 85mm MAF sensor that is used on just about all GM
engines from the early 2000 to current production. It is used on
everything from a 4.3L to the 8.1L. It's even used on the Z06 Corvette.
Note - The Delphi part # 25168491 was superseded by 25318411. | |||
| W0000581 | Serpentine Belt | Workhorse | |
| 4061080 | Serpentine Belt | Goodyear | |
| 1080K6 | Serpentine Belt | Kelly Springfield | |
| K061080 | Serpentine Belt | Gates | |
| 12-061080 | Serpentine Belt | NAPA | |
| Note - Be aware some RV'ers have indicated that the 108"
belt is to long and they had to use a 103" belt.
I received information that the 103" belt is for the P32's and the 108" belt is for the W series. The difference in sizes is do a pulley size difference between the P32 and W series. | |||
| WH12581203 | Serpentine Belt Tensioner | Workhorse | |
| 38258 | Serpentine Belt Tensioner | AC Delco | |
| 38258 | Serpentine Belt Tensioner | Gates | |
| 89430 | Serpentine Belt Tensioner | Dayco | |
| 08400003 | Alternator - 145 AMP | Workhorse | |
| 1N4812 | Alternator - 145 AMP | NAPA | |
| W8000145 | Starter | Workhorse | |
| 2446876 | Starter (reman) | NAPA | |
| 10475646 | Starter Solenoid | AC Delco | |
| SS-906 | Starter Solenoid | Wells | |
| 66-132 | Starter Solenoid | WAI | |
| ST 170 | Starter Solenoid | NAPA | |
| Note - Most parts houses, Auto/RV Dealers, Workhorse would
rather sell you a NEW or Reman starter than the parts to repair it, such
as a solenoid. You will also need a special #6 Torx Socket to remove the solenoid. | |||
| W0000032 | Power Steering Pump | Workhorse | |
| Note - This the only known part number for this power steering pump. | |||
| 12589867 | Knock Sensor | Workhorse | |
| 10456603 | Knock Sensor | GM | |
| 213-3521 | Knock Sensor | AC Delco | |
| Knock Sensor - 2nd Design - W/O Locating Tab | |||
| 10456222 | Knock Sensor | GM | |
| 213-298 | Knock Sensor | AC Delco | |
| Knock Sensor - 1st Design - W/Locating Tab | |||
| I have also found another set of numbers that may also fit. | |||
| 12591312 | Knock Sensor | GM | |
| AC10137 | Knock Sensor | Delphi | |
| 213-2829 | Knock Sensor | AC Delco | |
| DKS230 | Knock Sensor | Echlin | |
| KS112 | Knock Sensor | Standard | |
| Last but not least - Be sure to check the torque when installing. If it is to tight or to loose it could affect the sensor reading. I believe the correct torque setting is 15#. Always check to make sure. | |||
| 15150413 | Exhaust Donut | Workhorse | |
| 15170285 | Exhaust Donut | GM | |
| F31731 | Exhaust Donut | Car Quest | |
| W8000525 | Crankshaft sensor | Workhorse | |
| 12575172 | Crankshaft Sensor | GM | |
| Part # 12556427 was replaced by 12575172. Note - There are two versions of this sensor. One has a single "O" ring and the other has a double "O" ring. Part # 12575172 is the Double "O" version. Last but not least this sensor may vary by model year. | |||
| 25028274 | In Tank Fuel Pump | AC Delco/GM | |
| 25178125 | In Tank Fuel Pump | AC Delco/GM | |
| SP6100M | In Tank Fuel Pump | Spectra | |
| P74758M | In Tank Fuel Pump | Carter | |
| The above 3 numbers indicate this pump is for an 1998-1999 Chevrolet P30 Van or GMC P3500 Van | |||
A/C Parts
| Part # | Description | Supplier | |
| W8001369 | A/C Compressor | Workhorse | |
| 15067135 | A/C Compressor | Delphi | |
| 15-21177 | A/C Compressor | AC Delco | |
| 15-20747 | A/C Compressor | AC Delco/Denso | |
| 15-22124 | A/C Compressor | AC Delco | |
| 89019224 | A/C Compressor | GM | |
| 271569 | A/C Compressor | CarQuest | |
| 88950 | A/C Compressor | 4 Season's Auto Parts | |
| W8000070 | A/C Receiver/Drier | Workhorse | |
| 12546135 | A/C Receiver/Drier | GM | |
| Note - There are least 5 more GM part numbers (12375979, 12546083, 12375380,12548454,12442121) for this Receiver/Drier, each having a slightly different config and year of application. So, check your orginal Receiver/Drier for a part number before ordering. A very good source for parts is SCS/Frigette. Their parts files are in pdf format. | |||
| 157743 | A/C Expansion Valve | Autozone | |
| 10242579 | A/C Low Side Cutoff Switch | GM | |
| 15-2915 | A/C Low Side Cutoff Switch | AC Delco | |
| MT 1376 | A/C Low Side Cutoff Switch | Autozone | |
Filters
| Part # | Description | Supplier | |
| W8800481 | Air Filter-With Foam Cover | Workhorse | |
| A1236C | Air Filter-With Foam Cover | AC Delco | |
| A917C | Air Filter-No Foam Cover | Oemy's | |
| Fuel Filter 2001-2003 | |||
| W8800482 | Fuel Filter-Single Outlet | Workhorse | |
| GF481/GF652 | Fuel Filter-Single Outlet | AC Delco | |
| GF481/GF652 | Fuel Filter-Single Outlet | Oemy's | |
| 33481 | Fuel Filter-Single Outlet | WIX | |
| Fuel Filter 2004-UP | |||
| W0010883 | Fuel Filter-Duel Outlet | Workhorse | |
| 1015 | Fuel Filter-Duel Outlet | Oemy's | |
| Part # W0004996 was replaced by W0010883. | |||
| 25324052 | 1/2 Qt Oil Filter | Workhorse | |
| PF454 | 1/2 Qt Oil Filter | AC Delco | |
| W8800474 | 1 Qt Oil Filter | Workhorse | |
| PF1218 | 1 Qt Oil Filter | AC Delco | |
| PH1218 | 1 Qt Oil Filter | Oemy's | |
| 51060 | 1 Qt Oil Filter | WIX | |
| 1060 | 1 Qt Oil Filter | NAPA | |
| PH832 | 2 Qt Oil Filter | Oemys | |
| PF932F | 2 Qt Oil Filter | AC Delco | |
| 51794 | 2 Qt Oil Filter | WIX | |
| 1794 | 2 Qt Oil Filter | NAPA | |
| 29539579 | Allison Spin-on Filter | Allison/Omey's | |
| 29535627 | Allison Filter Magnet | Allison/Omey's | |
| 57701 | Allison Spin-on Filter | WIX | |
| 7701 | Allison Spin-on Filter | NAPA | |
Suspension Parts
| Part # | Description | Supplier | |
| 650-1178 | Tie Rod Boots | NAPA | |
| 370150A | Front Hub Seal | National | |
| 308-0866 | Rear Axle Seal | Stemco | |
| 370169A | Rear Axle Seal | Federal Mogul | |
| W20HH100 | Rear Axle Seal | Spicer | |
| 3566166C1 | Rear Axle Gasket | International | |
Miscellaneous Parts
The P32 Ignition Switch Fix part numbers have been
moved to the | |||
| Part # | Description | Supplier | |
| W8000543 | Turn Signal Switch | Workhorse | |
| 26100985 | Turn Signal Switch | AC Delco | |
| SW952 | Turn Signal Switch | Autozone | |
| 12573337/FC208 | Oil Filler Cap | GM/AC Delco | |
| 12574265/FC210 | Oil Filler Cap | GM/AC Delco | |
| 10243772/FC179 | Oil Filler Cap | GM/AC Delco | |
| 31099 | Oil Filler Cap | Gates | |
| 10114 | Oil Filler Cap | Stant | |
| 11114 | Oil Filler Cap | Stant | |
| 11506 | Locking Gas Cap | Stant | |
| 11836 | Non-Locking Gas Cap | Stant | |
|
Note - The Stant Locking gas cap number has changed... old number 10506 | |||
| W8000129 | Master Cylinder Cap | Workhorse | |
| ???????? | Master Cylinder Cap | Auto Parts Store | |
| W8000131 | Master Cylinder Cap - Gasket | Workhorse | |
| ???????? | Master Cylinder Cap - Gasket | Auto Parts Store | |
|
Note - Be aware the master cylinder caps are not a GM item. They are from a 78-98 Chrylser product. You can get them in the HELP section of most auto parts stores. Don't forget the rubber gaskets as they do not come with the caps. | |||