PRODUCT DETAILS
Thieman liftgate power unit. This is part number 4400851. We have tagged this as a Thieman power unit. This is found on the gravity down version of the TVL-20.
| Item | Part Number | Description | Qty./Model |
| 1 | 4423520 | Motor 8111 | 1 |
| 2 | 4400709 | Pump and Reservoir Asm | 1 |
| 3 | 4459 | Reservoir Ø4.50 x 12 (Poly) | 1 |
| 4 | 4406 | Reservoir Ø4.50 x 15 (Steel) | 1 |
| 5 | 4421520 | Bearing | 1 |
| 6 | 4421530 | Seal | 1 |
| 7 | 4421600 | O-Ring | 1 |
| 8 | 4423520 | Motor 8111 | 1 |
| 9 | 4400859 | Pump and Reservoir Asm | 1 |
| 10 | 4491 | Solenoid Coil only | 1 |
| 11 | 4492 | Solenoid Valve Asm | 1 |
| 12 | 4488-001 | Hose Clamp (Poly Reservoir) | 1 |
| 13 | 4421660 | Self Tap Screw #10 x .38 (Steel Rsvr.) | 6 |
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MODELS USING THIS PART
Note
This part appears in the following parts manuals. Always verify compatibility with your specific liftgate model and serial number before ordering.
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SHIPPING AND RETURNS
Shipping Information
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Return eligibility, time windows, and any applicable fees are outlined on our policy page. Policy terms may be updated there, so please refer to that page before placing your order.
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OEM Parts Diagram References
Find this Thieman Liftgate part in original OEM diagrams. Each link opens directly to the matching section in a new tab.
Reference Notice: Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
No active OEM diagram references are currently available for this item.
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- Description
Thieman liftgate power unit. This is part number 4400851. We have tagged this as a Thieman power unit. This is found on the gravity down version of the TVL-20.
| Item | Part Number | Description | Qty./Model |
| 1 | 4423520 | Motor 8111 | 1 |
| 2 | 4400709 | Pump and Reservoir Asm | 1 |
| 3 | 4459 | Reservoir Ø4.50 x 12 (Poly) | 1 |
| 4 | 4406 | Reservoir Ø4.50 x 15 (Steel) | 1 |
| 5 | 4421520 | Bearing | 1 |
| 6 | 4421530 | Seal | 1 |
| 7 | 4421600 | O-Ring | 1 |
| 8 | 4423520 | Motor 8111 | 1 |
| 9 | 4400859 | Pump and Reservoir Asm | 1 |
| 10 | 4491 | Solenoid Coil only | 1 |
| 11 | 4492 | Solenoid Valve Asm | 1 |
| 12 | 4488-001 | Hose Clamp (Poly Reservoir) | 1 |
| 13 | 4421660 | Self Tap Screw #10 x .38 (Steel Rsvr.) | 6 |