Workhorse W20 Transmission Parts

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Essential Workhorse W20 Transmission Parts

Dorman – HD Solutions – Heavy Duty Transmission Oil Cooler (Part No.918-5602)

Heavy Duty Transmission Oil Cooler

from

$192.99
This automatic transmission oil cooler is designed to match the function of an original cooler on specified vehicles. It is engineered to help maintain proper engine oil temperature when an original cooler has failed from heat, corrosion, or damage.

Product Features:
  • Direct replacement – this automatic transmission fluid cooler is designed to match the function of an original cooler on specified vehicle
  • Ideal solution – engineered to help maintain proper transmission fluid temperature when an original cooler has failed from heat, corrosion or damage
  • Durable construction – designed and manufactured to strict specifications for reliable performance
  • Trustworthy quality – backed by a team of product experts in the United States and more than a century of automotive experience
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Dorman – Transmission Connector for 5/8 In. Tube 7/8-14 UNF (Part No.800-613)

Transmission Connector for 5/8 In. Tube 7/8-14 UNF

from

$24.99
Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Product Features:
  • Quality replacement – this transmission cooler connector matches the fit and function of the original equipment connector
  • Durable construction – this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
  • Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
  • Ideal shop supply – this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
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Dorman – Transmission Fitting (Part No.800-728)

Transmission Fitting

from

$26.99
Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Product Features:
  • Quality replacement – this transmission cooler connector matches the fit and function of the original equipment connector
  • Durable construction – this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
  • Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
  • Ideal shop supply – this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
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Dorman – HD Solutions – Transmission Fitting (Part No.800-5603)

Transmission Fitting

from

$62.99
Made of quality materials, this automatic transmission oil cooler line connector matches the fit and function of a damaged original equipment connector to restore leak-free performance between the transmission and the oil cooler.

Product Features:
  • Quality replacement – this transmission cooler connector matches the fit and function of the original equipment connector
  • Durable construction – this oil cooler line connector is made of quality materials for a precise fit and leak-free durability
  • Performance tested – this connector has been rigorously pressure tested to ensure reliable performance
  • Ideal shop supply – this connector is recommended to have on hand any time service is being performed on the transmission oil cooler line
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Dorman – 4 Wire Multipurpose Connector (Part No.645-578)

4 Wire Multipurpose Connector

from

$62.99
This neutral safety switch connector is designed to match the appearance and function of the original hardware on specified applications. Made of quality materials, it is engineered for reliable performance and durability.

Product Features:
  • Direct replacement – this neutral safety switch connector matches the appearance and function of the factory hardware on specified applications
  • Ideal solution – this connector is a reliable replacement for an original part that is missing or has failed due to fatigue
  • Durable construction – this part is made from quality materials to ensure reliable performance and long service life
  • Trustworthy quality – backed by team of product experts in the United States and more than a century of automotive experience
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Premium Drive Train – Premium Remanufactured Automatic Transmission (Part No.T4L80E810117W)

Premium Remanufactured Automatic Transmission

from

$2534.99
All transmissions are completely disassembled and cleaned. All cases are media-blasted. Internal parts are inspected for wear or damage and replaced as required. All bushings are inspected and replaced as necessary. All friction components are replaced with upgraded heavy-duty parts. Drum assemblies are air-checked and side play is measured to ensure proper clearance. All seals, O-rings, and gaskets are replaced. All solenoids are tested and replaced if they do not pass duty-cycle specifications. Internal wiring harnesses are inspected and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear. Valves and valve bores are inspected, and bores are machined as required. Completed valve bodies are tested for proper operation prior to dyno testing.

Product Features:
  • Each transmission undergoes rigorous dyno testing to verify precise hydraulic pressures, smooth shifting, torque converter function, and park lock operation-guaranteeing reliable, trouble-free driving.
  • Every transmission is fully disassembled, cleaned, and rebuilt using 100% upgraded heavy-duty seals, friction components, solenoids, and torque converter parts to ensure maximum durability and performance.
  • Drum assemblies are air checked and side play is checked to assure proper clearance. 100% of seals, oft.rings and gaskets are replaced.
  • 100% of solenoids are checked and replaced if they do not pass duty cycle tests. Internal wiring harness are checked and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear.
  • Transmissions are assembled, end plays are set and fasteners are torqued to the required specification.
  • Torque Converter: 100% of converters are dynamic balanced. 100% of pumps are furnaced brazed. 100% new bearings and oft.rings. 100% new springs and rollers in stator. 100% new thrust washers. 100% new friction liners in overdrive lockup converters.
  • 100% of transmissions are dynamometer tested to ensure proper pressures and shift quality throughout the operating range. All upshifts and downshifts are checked against preset parameters. Torque converter stall speed and lockup is verified on the dyno
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Premium Drive Train – Premium Remanufactured Automatic Transmission (Part No.T4L80E8101W)

Premium Remanufactured Automatic Transmission

from

$2534.99
All transmissions are completely disassembled and cleaned. All cases are media-blasted. Internal parts are inspected for wear or damage and replaced as required. All bushings are inspected and replaced as necessary. All friction components are replaced with upgraded heavy-duty parts. Drum assemblies are air-checked and side play is measured to ensure proper clearance. All seals, O-rings, and gaskets are replaced. All solenoids are tested and replaced if they do not pass duty-cycle specifications. Internal wiring harnesses are inspected and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear. Valves and valve bores are inspected, and bores are machined as required. Completed valve bodies are tested for proper operation prior to dyno testing.

Product Features:
  • Each transmission undergoes rigorous dyno testing to verify precise hydraulic pressures, smooth shifting, torque converter function, and park lock operation-guaranteeing reliable, trouble-free driving.
  • Every transmission is fully disassembled, cleaned, and rebuilt using 100% upgraded heavy-duty seals, friction components, solenoids, and torque converter parts to ensure maximum durability and performance.
  • Drum assemblies are air checked and side play is checked to assure proper clearance. 100% of seals, oft.rings and gaskets are replaced.
  • 100% of solenoids are checked and replaced if they do not pass duty cycle tests. Internal wiring harness are checked and replaced as necessary. Valve bodies are disassembled, cleaned, and measured for wear.
  • Transmissions are assembled, end plays are set and fasteners are torqued to the required specification.
  • Torque Converter: 100% of converters are dynamic balanced. 100% of pumps are furnaced brazed. 100% new bearings and oft.rings. 100% new springs and rollers in stator. 100% new thrust washers. 100% new friction liners in overdrive lockup converters.
  • 100% of transmissions are dynamometer tested to ensure proper pressures and shift quality throughout the operating range. All upshifts and downshifts are checked against preset parameters. Torque converter stall speed and lockup is verified on the dyno
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Helping You Find the Right Transmission Parts for Your Workhorse W20

You love your W20. So we’ve made it easier than ever to help you find Workhorse W20 Transmission Parts in our online catalog. Our inventory holds 7 aftermarket and OEM Transmission Parts for your Workhorse W20, ranging from $24.99 to $2,534.99.

We offer parts from 2 brands trusted to make quality Transmission Parts for your Workhorse W20.

Find your W20 Transmission Parts here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your Workhorse W20 part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Transmission Parts Brands for Your Workhorse W20

Our inventory holds Transmission Parts for your Workhorse W20 from 2 trusted brands. You’ll find OEM and aftermarket parts from brands like Dorman and Premium Drive Train, all of which can keep that Workhorse happy.

FAQs for Workhorse W20 Transmission Parts

What are the most purchased Transmission Parts for the Workhorse W20?

Out of 7 Transmission Parts for the Workhorse W20, the most popular in our inventory are:
Transmission Connector for 5/8 In. Tube 7/8-14 UNF
from $24.99
This product is not rated
Transmission Connector for 5/8 In. Tube 7/8-14 UNF
Automatic Transmission Line Connectors
Transmission Fitting
from $26.99
This product is not rated
Transmission Fitting
Automatic Transmission Line Connectors
Transmission Fitting
from $62.99
This product is not rated
Transmission Fitting
Automatic Transmission Line Connectors