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OE Quality
60-Day Returns
BoschPart #: AL4225N
Bosch AL4225N Alternator
12 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$263.21Free Shipping
Free ShippingNo Cost to Continental U.S.
Free Returns*Wrong fit? No cost
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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
Alternator (New)
Fitment: Mazda, Miata, 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? See all Alternator options
Bosch AL4225N Alternator
| Brand | Bosch |
|---|---|
| Part Number | AL4225N |
| Position | Alternator (New) |
| Voltage | 14 |
| Plug Clock Rear View Main Mounting Ear at 6 O Clock | 10 |
| Fan Type | Internal |
| Ground Type | Negative |
| Mounting Configuration Code | Short |
| Rotation Direction | Clockwise (right) |
| One Wire Capable | No |
| Pulley Included | Yes |
| External Regulator Included | Yes |
| Pulley Groove Quantity | 4 |
| Case Color | Silver |
| Outside Pulley Diameter | 54.5 |
| Regulator Type | External |
| Decoupled Or Clutch Pulley | No |
| AC Service Tap | No |
| Case Material | Aluminum |
| Amperage Rating | 80 |
| Mounting Type | Single pivoted lever |
| Brushless | No |
| Automotive Item Weight (lbs) | 11.15539 lb |
| New Or Remanufactured | New |
| Product Length | 6.377953 in |
| Pulley Type / Belt Type (Alternator) | 4s |
This part fits 12 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Mazda | Miata | 1.8L | L4 | N/A | Alternator (New) |
| 2004 | Mazda | Miata | 1.8L | L4 | N/A | Alternator (New) |
| 2003 | Mazda | Miata | 1.8L | L4 | N/A | Alternator (New) |
| 2003 | Mazda | Protege | 2.0L | L4 | N/A | Alternator (New) |
| 2003 | Mazda | Protege5 | 2.0L | L4 | N/A | Alternator (New) |
| 2002 | Mazda | Miata | 1.8L | L4 | N/A | Alternator (New) |
| 2002 | Mazda | Protege | 2.0L | L4 | N/A | Alternator (New) |
| 2002 | Mazda | Protege5 | 2.0L | L4 | N/A | Alternator (New) |
| 2001 | Mazda | Miata | 1.8L | L4 | N/A | Alternator (New) |
| 2001 | Mazda | Protege | 2.0L | L4 | N/A | Alternator (New) |
| 2000 | Mazda | Protege | 1.8L | L4 | N/A | Alternator (New) |
| 1999 | Mazda | Protege | 1.8L | L4 | N/A | Alternator (New) |
* 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:
BP6D18300FP3418300AFP3418300B
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.