PRODUCT DETAILS
This item is no longer manufactured. Contact us for more information.
Thieman liftgate power unit - gravity down (m.c.). This is part number 4400091. We have tagged this as a Thieman power unit.
The power unit as a whole is now obsolete. Please call us today with your liftgate's serial number and model to obtain your replacement.
| Item | Part Number Description | Qty./Model |
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4400099 Pump and Reservoir Asm | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4403 Reservoir Ø6 x 9 | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 4421350 Bracket | 1 |
| 8 | 4421420 Bracket | 1 |
| 9 | 4421370 Cable | 1 |
| 10 | 4422980 Canister Switch | 1 |
| 11 | 4455 Eye Bolt | 1 |
| 12 | 4422350 Handle Bracket | 1 |
| 13 | 4420970 Screw | 4 |
| 14 | 8109-009 Screw .25 x 1.38 | 2 |
| 15 | 4421290 Dump Valve Asm | 1 |
| 16 | 4421600 O-Ring | 1 |
| 17 | 4421660 Self Tap Screw #10 x .38 | 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
Shipping timelines, transit options, and exceptions can vary by part and location. Please review our official policy page for the most current shipping and return details.
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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
This item is no longer manufactured. Contact us for more information.
Thieman liftgate power unit - gravity down (m.c.). This is part number 4400091. We have tagged this as a Thieman power unit.
The power unit as a whole is now obsolete. Please call us today with your liftgate's serial number and model to obtain your replacement.
| Item | Part Number Description | Qty./Model |
| 1 | 4423520 Motor 8111 | 1 |
| 2 | 4400099 Pump and Reservoir Asm | 1 |
| 3 | 4420410 Breather Cap | 1 |
| 4 | 4403 Reservoir Ø6 x 9 | 1 |
| 5 | 4421520 Bearing | 1 |
| 6 | 4421530 Seal | 1 |
| 7 | 4421350 Bracket | 1 |
| 8 | 4421420 Bracket | 1 |
| 9 | 4421370 Cable | 1 |
| 10 | 4422980 Canister Switch | 1 |
| 11 | 4455 Eye Bolt | 1 |
| 12 | 4422350 Handle Bracket | 1 |
| 13 | 4420970 Screw | 4 |
| 14 | 8109-009 Screw .25 x 1.38 | 2 |
| 15 | 4421290 Dump Valve Asm | 1 |
| 16 | 4421600 O-Ring | 1 |
| 17 | 4421660 Self Tap Screw #10 x .38 | 6 |