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ACL engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full ACL lineup with fast shipping and expert fitment support — order with confidence.
When your crankshaft has been machined to accommodate a .025mm undersize, you need bearings that match that precision exactly. The ACL Race Series .025mm Oversized Rod Bearing Set is designed for the legendary Mazda B6 and BP engine platforms, widely used in the Miata, 323, and Protege. These bearings provide the necessary clearance for machined crankshafts, ensuring optimal oil pressure and engine longevity.
Whether you are building a track-ready Miata or restoring a classic 323, these oversized bearings are a critical component for any bottom-end rebuild. They provide the reliability needed to push your engine to its limits without the risk of oil starvation or bearing failure. Ensure your crankshaft is protected with the industry-leading quality of ACL. For all your engine building needs, explore the selection available at GGCRACING.
| Brand | ACL |
|---|---|
| Manufacturer part number | 4B8351H-.025 |
| GGC SKU | ACL4B8351H-.025 |
| UPC / GTIN | 9315726152263 |
Use the manufacturer part number when you compare with other listings or ask us to confirm a match.
| Box size | 4 × 2 × 1.3 in |
|---|---|
| Shipping weight | 0.29 lb |
| Year | Make | Model | Trim |
|---|---|---|---|
| 2001-2005 | Kia | Rio | Base |
| 2002-2005 | Kia | Rio | Cinco |
| 1994-1997 | Kia | Sephia | GS, LS, RS |
| 1986-1988 | Mazda | 323 | DX |
| 1986-1989 | Mazda | 323 | LX |
| 1986-1994 | Mazda | 323 | Base |
| 1988 | Mazda | 323 | GT |
| 1988-1989 | Mazda | 323 | GTX |
| 1988-1993 | Mazda | 323 | SE |
| 1990-1997 | Mazda | Miata | Base |
| 1991 | Mazda | Miata | SE |
| 1993 | Mazda | Miata | LE |
| 1994-1997 | Mazda | Miata | M Edition |
| 1997 | Mazda | Miata | STO |
| 1999 | Mazda | Miata | 10th Anniversary |
| 1999-2005 | Mazda | Miata | Base |
| 2000-2003 | Mazda | Miata | SE |
| 2000-2005 | Mazda | Miata | LS |
| 2003 | Mazda | Miata | Shinsen |
| 2004-2005 | Mazda | Miata | Mazdaspeed |
| 1992-1995 | Mazda | MX-3 | Base |
| 1990 | Mazda | Protege | SE |
| 1990-1991 | Mazda | Protege | 4WD |
| 1990-1994 | Mazda | Protege | LX |
| 1991-1994 | Mazda | Protege | DX |
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