Description
Allison Automatic Transmission Control Valve Filter Cover Part #29524447
Compatible Allison transmissions: Select 1000, 2000, 3000, and 4000 Series automatic transmissions (varies by build)
The Allison 29524447 valve body filter cover is a critical internal transmission component that secures and seals the valve body filter, ensuring proper fluid flow and hydraulic pressure throughout the transmission. This cover plays a key role in protecting the valve body, clutch circuits, and solenoids from contamination and pressure loss.
A worn, cracked, or improperly sealed valve body filter cover can allow unfiltered transmission fluid to circulate, leading to erratic shifting, pressure-related faults, and accelerated internal wear. This part is commonly replaced during valve body service, internal filter replacement, or complete transmission rebuilds.
Manufactured to meet OEM specifications for fitment, sealing, and durability under heavy-duty operating conditions.
Image is representation. Pictures of the actual part are available upon request.
Common symptoms of a failing control valve filter cover
Transmission fluid leaks originating from the valve body area
Delayed, harsh, or inconsistent gear shifts
Low line pressure or pressure-related fault codes
Transmission slipping or flare during acceleration
Metal debris or contamination found in transmission fluid
Repeated internal filter misalignment or improper seating
Transmission concerns should always be properly diagnosed. Reaction Force can help confirm whether this component is contributing to your issue before ordering.
Pre-installation checklist
Confirm exact transmission model and serial number compatibility
Inspect internal filter for debris, damage, or collapse
Ensure valve body sealing surfaces are clean and undamaged
Replace associated gaskets, seals, or O-rings as required
Verify no warping or cracking of mating components
If you are unsure about compatibility, contact Reaction Force before purchase to avoid downtime or incorrect installation.
Installation notes
- Drain transmission fluid prior to internal service
- Remove valve body components following Allison service procedures
- Install the valve body filter and cover evenly to prevent distortion
- Torque fasteners to OEM Allison specifications
- Refill with approved Allison TES-295 or TES-668 transmission fluid
- Clear stored DTCs and perform post-install operational checks
Common Questions about the Allison Transmission 29524447 Control Valve Filter Cover
What does the Allison 29524447 control valve filter cover do?
This component secures the internal transmission filter to the valve body and ensures proper sealing and fluid routing. Without a properly functioning filter cover, hydraulic pressure and filtration integrity can be compromised.
What Allison transmissions use part number 29524447?
This valve body filter cover is used in select Allison 1000, 2000, 3000, and 4000 Series automatic transmissions. Exact compatibility varies by transmission model, configuration, and serial number. Always confirm before ordering.
What happens if the control valve filter cover fails?
A failed or leaking filter cover can cause unfiltered fluid circulation, pressure loss, harsh or delayed shifts, slipping, overheating, and potential valve body or clutch damage.
Should I replace the filter cover during a rebuild or valve service?
Yes. The valve body filter cover is commonly replaced during internal service to ensure proper sealing and prevent future pressure or contamination issues, especially in high-mileage or severe-duty applications.
Is this part new or remanufactured?
Availability may vary. Contact Reaction Force to confirm current condition, stock, and application-specific recommendations.
Can this part cause transmission fault codes?
Yes. Improper filtration or pressure loss caused by a damaged filter cover can contribute to pressure-related fault codes, shift solenoid issues, and limp mode conditions.
Do I need special tools or programming after installation?
No programming is required for this component alone. However, proper installation following Allison service procedures and post-install inspection is critical.
Need help?
Reaction Force provides:
Transmission component compatibility verification
Pre-sale diagnostics and expert technical guidance
Support for Allison MD and HD automatic transmissions
Real-world advice from technicians who work on these units daily
Call (503) 862-6322
