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DormanPart #: 645-540
Dorman 645-540 Headlight Socket
⚙️ 28 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$19.93Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*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: Mazda, 3, 5, Protege, and Protege5
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Headlight Socket options
Dorman 645-540 Headlight Socket
| Brand | Dorman |
| Part Number | 645-540 |
| Terminal Type | Blade |
| Wire Quantity | 2 |
| Terminal Gender | Female |
| Overall Length | 1.5 in |
| Package Contents | Mazda low beam socket |
| Terminal Material | Plastic |
This part fits 28 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2010 | Mazda | 5 | Grand Touring | N/A | Low Beam; Male | ||
| 2010 | Mazda | 5 | Sport | 2.3L | L4 | N/A | Low Beam; Male |
| 2010 | Mazda | 5 | Touring | 2.3L | L4 | N/A | Low Beam; Male |
| 2009 | Mazda | 3 | S | N/A | Low Beam; Male | ||
| 2009 | Mazda | 3 | i | 2.0L | L4 | N/A | Low Beam; Male |
| 2009 | Mazda | 3 | Mazdaspeed | N/A | Low Beam; Male | ||
| 2009 | Mazda | 5 | Grand Touring | N/A | Low Beam; Male | ||
| 2009 | Mazda | 5 | Sport | 2.3L | L4 | N/A | Low Beam; Male |
| 2009 | Mazda | 5 | Touring | 2.3L | L4 | N/A | Low Beam; Male |
| 2008 | Mazda | 3 | i | N/A | Low Beam; Male | ||
| 2008 | Mazda | 3 | S | N/A | Low Beam; Male | ||
| 2008 | Mazda | 3 | Mazdaspeed | N/A | Low Beam; Male | ||
| 2008 | Mazda | 5 | Grand Touring | N/A | Low Beam; Male | ||
| 2008 | Mazda | 5 | Sport | 2.3L | L4 | N/A | Low Beam; Male |
| 2008 | Mazda | 5 | Touring | 2.3L | L4 | N/A | Low Beam; Male |
| 2007 | Mazda | 3 | 2.3L | L4 | N/A | Low Beam; Male | |
| 2007 | Mazda | 3 | 2.0L | L4 | N/A | Low Beam; Male | |
| 2007 | Mazda | 5 | 2.3L | L4 | N/A | Low Beam; Male | |
| 2006 | Mazda | 3 | 2.3L | L4 | N/A | Low Beam; Male | |
| 2006 | Mazda | 3 | 2.0L | L4 | N/A | Low Beam; Male | |
| 2006 | Mazda | 5 | N/A | Low Beam; Male | |||
| 2005 | Mazda | 3 | N/A | Low Beam; Male | |||
| 2004 | Mazda | 3 | N/A | Low Beam; Male | |||
| 2003 | Mazda | Protege | 2.0L | L4 | N/A | Low Beam; Male | |
| 2003 | Mazda | Protege5 | N/A | Low Beam; Male | |||
| 2002 | Mazda | Protege | 2.0L | L4 | N/A | Low Beam; Male | |
| 2002 | Mazda | Protege5 | N/A | Low Beam; Male | |||
| 2001 | Mazda | Protege | N/A | Low Beam; Male |
* 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:
14391P2071B28V510A3
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.