This upper boom (shaft housing) assembly is designed to form the top section of curved-shaft string trimmers, enclosing the drive shaft that transfers power from the engine to the cutting head. Built for durability and proper alignment, it helps restore smooth rotation and reliable trimming performance when the original upper shaft is bent, cracked, or worn. Ideal for repair rather than full tool replacement, it returns dependable power delivery and stable operation for everyday trimming tasks.
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| Brand | Model Number | Description |
|---|---|---|
| Troy-Bilt | 1154399 | Trimmer - 1154399 - Trimmers |
| Troy-Bilt | 1156793 | Trimmer - 1156793 - Trimmers |
| Troy-Bilt | 1157403 | Trimmer - 1157403 - Trimmers |
| Craftsman | 316711022 | Trimmer - String Trimmer |
| Craftsman | 316711023 | Trimmer - Weedwacker Gas Trimmer |
| Craftsman | 316711170 | Trimmer - String Trimmer |
| Craftsman | 316711171 | Trimmer - String Trimmer |
| Craftsman | 316711191 | Trimmer - String Trimmer |
| Craftsman | 316711192 | Trimmer - String Trimmer |
| Craftsman | 316711193 | Trimmer - Line Trimmers/Weedwackers, Gas |
| Craftsman | 316711200 | Trimmer - String Trimmer |
| Craftsman | 316711201 | Trimmer - String Trimmer |
| Craftsman | 316711202 | Trimmer - Weedwacker Gas Trimmer |
| Craftsman | 316711390 | Trimmer - String Trimmer |
| Craftsman | 316740820 | Trimmer - String Trimmer |
| Craftsman | 316740890 | Trimmer - String Trimmer |
| Craftsman | 316794460 | Trimmer - String Trimmer |
| MTD | 41AD25CC793 | Trimmer - Gas Line Trimmer |
| MTD | 41AD25PS793 | Trimmer - Gas Line Trimmer |
| MTD | 41AD25SC793 | Trimmer - Gas Line Trimmer |
| Yard Machines | 41AD270C900 | Trimmer - Yard Machines String Trimmer Model 41AD270C900 Parts |
| MTD | 41AD27SC793 | Trimmer - Gas Line Trimmer |
| MTD | 41ADZ20C791 | Trimmer - Gas Line Trimmer |
| MTD | 41ADZ20C899 | Trimmer - Trimmer |
| MTD | 41ADZ32C799 | Trimmer - Trimmer |
| MTD | 41ADZ3CC799 | Trimmer - Trimmer |
| MTD | 41BDZ22C799 | Trimmer - Trimmer |
| MTD | 41CD25SC793 | Trimmer - Ws210 Gas Line Trimmer/Weedwacker |
| Craftsman | 41CDZ20C799 | Trimmer - Craftsman String Trimmer Model 41CDZ20C799 Parts |
| MTD | 41CDZ22C799 | Trimmer - Trimmer |
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
