Description
Allison Transmission Oil Fill Tube Part #29506008
Compatible Allison transmissions: AT, MT, and HT Series (varies by model and configuration)
The Allison 29506008 oil fill tube is a critical service component that allows proper transmission fluid filling and level verification. A damaged, corroded, or missing fill tube can lead to improper fluid levels, contamination, and increased risk of transmission overheating or internal damage.
This OEM fill tube is designed to align correctly with the transmission case and mating components, ensuring safe and accurate fluid service during maintenance or repair.
Ideal for:
Replacement of damaged or corroded oil fill tubes
Restoration or service of older Allison AT, MT, and HT Series transmissions
Maintaining OEM configuration in vocational or legacy equipment
Image is representation. Photos of the actual NOS part are available upon request.
Common symptoms of a failing or damaged oil fill tube
Transmission fluid leaks near the fill point
Difficulty adding or checking transmission fluid
Improper fluid levels leading to overheating
Contamination entering the transmission
Loose or misaligned fill tube during service
Transmission service issues should always be properly diagnosed. Reaction Force can help verify whether this component is required for your repair.
Pre-installation checklist
- Confirm transmission model, series, and serial number compatibility
- Inspect surrounding seals, caps, and grommets for wear
- Ensure mating surfaces are clean and corrosion-free
- Verify correct tube routing and length for the application
Installation notes
Remove damaged or corroded fill tube carefully
Install OEM tube in proper orientation per Allison guidelines
Ensure secure seating and proper sealing
Verify fluid level using Allison-approved procedures
Fill with approved TES-295 or TES-668 transmission fluid as required
Common Questions About The Allison Transmission 29506008 Oil Fill Tube
What is the Allison 29506008 oil fill tube used for?
It provides the designated fill point for adding and servicing transmission fluid on select Allison AT, MT, and HT Series automatic transmissions.
What transmissions are compatible with part number 29506008?
This part is used on certain Allison AT, MT, and HT Series transmissions. Exact compatibility depends on transmission model and serial number. Verification is recommended prior to purchase.
What does NOS OEM mean?
NOS (New Old Stock) refers to original OEM parts manufactured by Allison that were never installed or used. These parts meet original factory specifications but may have been stored for an extended period.
Can a damaged oil fill tube cause transmission problems?
Yes. A compromised fill tube can lead to fluid leaks, contamination, incorrect fluid levels, and overheating, all of which can negatively affect transmission performance and longevity.
Is programming required after installation?
No programming is required for installation of the oil fill tube. However, fluid level verification should be performed following Allison service procedures.
Is this part still available new from Allison?
Availability varies. NOS OEM parts like this are increasingly difficult to source. Contact Reaction Force to confirm current stock.
Reaction Force provides:
OEM and legacy Allison parts sourcing
Transmission compatibility verification
Expert technical guidance from experienced technicians
Support for Allison AT, MT, and HT Series platforms
Call or text: (503) 862-6322
