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OE Quality
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DormanPart #: 34258
Dorman 34258 A/C Compressor Bypass Pulley
19 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Buick, Chevrolet, and Pontiac, Allure, Grand Prix, Impala, LaCrosse, and Monte Carlo
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST
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Dorman 34258 A/C Compressor Bypass Pulley
| Brand | Dorman |
|---|---|
| Part Number | 34258 |
| Material | Aluminum bracket |
| Material | Plastic pulley |
| Outside Diameter | 4.78 |
| Mounting Hardware Included | No |
| Belt Type | Serpentine |
| Mounting Bracket Included | Yes |
| Compressor Type | Cvc |
| Installation Instructions Included | No |
| Number of Pulleys Included | 1 |
| Package Contents | Bracket and pulleys |
This part fits 19 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2009 | Buick | Allure | 3.8L | V6 | N/A | |
| 2009 | Buick | LaCrosse | 3.8L | V6 | N/A | |
| 2008 | Buick | Allure | 3.8L | V6 | N/A | |
| 2008 | Buick | LaCrosse | 3.8L | V6 | N/A | |
| 2008 | Pontiac | Grand Prix | 3.8L | V6 | N/A | |
| 2007 | Buick | Allure | 3.8L | V6 | N/A | |
| 2007 | Buick | LaCrosse | 3.8L | V6 | N/A | |
| 2007 | Pontiac | Grand Prix | 3.8L | V6 | N/A | |
| 2006 | Buick | Allure | 3.8L | V6 | N/A | |
| 2006 | Buick | LaCrosse | 3.8L | V6 | N/A | |
| 2006 | Pontiac | Grand Prix | 3.8L | V6 | N/A | |
| 2005 | Buick | Allure | 3.8L | V6 | N/A | |
| 2005 | Buick | LaCrosse | 3.8L | V6 | N/A | |
| 2005 | Chevrolet | Impala | 3.8L | V6 | N/A | |
| 2005 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | |
| 2005 | Pontiac | Grand Prix | 3.8L | V6 | N/A | |
| 2004 | Chevrolet | Impala | 3.8L | V6 | N/A | |
| 2004 | Chevrolet | Monte Carlo | 3.8L | V6 | N/A | |
| 2004 | Pontiac | Grand Prix | 3.8L | V6 | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
471918865125126728368283CO21511LCKT3778KT3778AKT3779KT3779AKT4917AKT5100KT5100AKT5129KT5129AKT6266KT6266ATSN1871TSN1872TSN1873TSR1871TSR1872TSR1873
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.