Description
Allison 4500 Series 4500RDS with PTO 5th Gen 29560437
Priced without a core deposit. Reman Allison Exchange Transmission with 2 year unlimited mile warranty. Buyer pays all freight for delivery of reman exchange transmission and core return. We can provide freight quotes upon request. Local pickup and free delivery within 100 miles is available. If within 300 miles, please call to see if we can still deliver for free! If we deliver this unit, we include free reflash of your TCM. Price does not include fully refundable core deposit. Please see policies page for core criteria and warranty details. Image is representation. You may request pictures of actual unit.
Common failure signs in the original transmission
If you’re replacing a failed 4500RDS, symptoms may have included:
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Harsh or no shifting under load
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PTO failing to engage or output inconsistent
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TCM cannot command gear change
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Codes such as P0721, P0880, U0101, or P0700
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Gear range not displayed or flashing on selector
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Transmission stuck in limp or fails to move
If you’re seeing these symptoms, this remanufactured unit is a solid drop-in solution.
Pre-replacement checklist
Before install, confirm the following:
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Gen 5 TCM and wiring harness compatibility
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PTO spec match (gear vs. hydraulic vs. electric clutch type)
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Correct cooler line routing and flushing
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Vehicle application is within torque/load limits
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Programming access post-install (Allison DOC, Tech Tool, etc.)
Call Reaction Force—we’ll walk you through the match-up if needed.
Installation notes
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Disconnect battery before starting
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Use new filters, flush cooler and lines
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Check harness condition and TCM mounting
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Program TCM after install to confirm shift logic and PTO engagement
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Use approved TES-295 or TES-668 fluid
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Clear codes and perform relearn drive cycle after first startup
Need help?
Reaction Force offers:
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Free spec matching and install prep support
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PTO system compatibility checks
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Access to calibration and programming guidance
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2-year unlimited mileage warranty on all 4500RDS builds
Call (503) 862-6322
Images are for representational purposes only.
Frequently asked questions
1. What does the 4500RDS with PTO do?
It powers both the vehicle and auxiliary equipment like blowers, pumps, or cranes via the PTO port.
2. Do I need to program this transmission?
Yes, it must be programmed to your VIN and transmission configuration.
3. How is this different from 29560436?
Both are 4500RDS with PTO, but this unit (29560437) may have specific calibration or hardware updates based on OEM variation.
4. Will this work in my fire truck/refuse truck/jetter?
Yes—as long as your chassis supports the 4500RDS and Gen 5 electronics.
5. What’s the warranty?
2-year unlimited miles on the transmission. Electronic components like TCMs are covered for 6 months.
