ACL Performance Main Bearing Set For Mazda B6 BP 1.6L 1.8L +0.25 Oversize
Part # 5M8353H-.25 SKU 18420
Highlights
- Bearing size
- +0.25 Oversize
- Construction
- Tri-Metal, Steel-Backed
- Displacement
- 1.6L / 1.8L Inline-4
- Grade type
- Performance
- Material
- Tri-Metal (Steel-Backed)
- Max wall thickness
- 0.0793 in
- Oil clearance
- Standard
- Outside diameter
- 2.1259 in
- Shaft diameter
- 1.9661 in
- Type
- Crankshaft Main Bearing Set
- Width
- 0.694 in
- Min std tunnel size
- 2.1259" (53.998mm)
- Max overall length
- 0.6941" (17.63mm
- Min std shaft size
- 1.9661" (49.938mm)
- Oil control
- Optimized lubrication and oil film stability
- Interchange number
- 1986-2005 Mazda 323, Miata, MX-3, Protegé, Mercury Capri, Kia, Rio, and Kia Sephia L4 engine bearing, applications for B6 and BP 1.6L / 1.8L platforms, +0.25, oversize main bearing set.
- Max wall at crown
- 0.0793" (2.013mm)
- Application
- Performance rebuilds, OEM refresh, high-RPM use
Description
ACL Performance Main Bearing Set For Mazda B6 BP 1.6L 1.8L +0.25 Oversize
The ACL Performance Main Bearing Set is engineered specifically for the Mazda B6 and BP engine families, which cover 1.6L and 1.8L displacement engines. These bearings are designed to provide optimal clearance, stiffness, and resistance to wear, ensuring the smooth operation of your engine under varying loads. With a +0.25 oversize, this set is designed to fit engines that require a slightly increased clearance for improved oil flow and reduced operating temperatures.
Crafted from high-quality materials, these main bearings feature a unique tri-metal construction that enhances durability and longevity. This construction allows for superior load distribution across the bearing surface, minimizing wear and tear. The precision-engineered design of these bearings ensures a perfect fit, which helps to maintain the integrity of the crankshaft and ensures efficient power delivery throughout the engine’s operating range.
Engineers at ACL have incorporated advanced surface treatments into the manufacturing process. These treatments reduce friction and improve oil retention, promoting better lubrication under extreme conditions. As a result, the ACL Performance Main Bearing Set not only enhances the performance of your Mazda engine but also contributes to its long-term reliability and efficiency.
FITMENT: This main bearing set is compatible with Mazda B6 and BP engines, specifically designed for 1.6L and 1.8L applications requiring a +0.25 oversize bearing configuration.
Key Features & Benefits
- Tri-metal construction for enhanced durability and reduced wear.
- Precision engineering ensures perfect fit and optimal clearance.
- Designed to improve oil flow and reduce operating temperatures.
- Advanced surface treatments minimize friction and enhance lubrication.
- Ideal for performance applications requiring higher reliability.
Fits
1990-2005 Mazda Miata, 1990-2001 Mazda Protege, 1986-1994 Mazda 323, 1994-1997 Kia Sephia and 3 more
Fitment data from the manufacturer catalogue. Check your engine before ordering, or call us.
Vehicle fitment
| Make | Model | Submodel | Years |
|---|
No vehicle matches that filter.
Fitment data from the manufacturer catalogue. Check your engine before ordering, or call us.
Specifications
| Identification | |
|---|---|
| Brand | ACL |
| Part number | 5M8353H-.25 |
| SKU | 18420 |
| Dimensions and weight | |
| Outside diameter | 2.1259 in |
| Width | 0.694 in |
| Dimensions (W × H × D) | 3.00 × 5.00 × 1.00 in |
| Material and finish | |
| Construction | Tri-Metal, Steel-Backed |
| Finish | Unfinished |
| Material | Tri-Metal (Steel-Backed) |
| Series and warranty | |
| Details | |
| Bearing size | +0.25 Oversize |
| Displacement | 1.6L / 1.8L Inline-4 |
| Grade type | Performance |
| Includes | Main Bearings |
| Max wall thickness | 0.0793 in |
| Oil clearance | Standard |
| Shaft diameter | 1.9661 in |
| Type | Crankshaft Main Bearing Set |
| Min std tunnel size | 2.1259" (53.998mm) |
| Max overall length | 0.6941" (17.63mm |
| Min std shaft size | 1.9661" (49.938mm) |
| Oil control | Optimized lubrication and oil film stability |
| Interchange number | 1986-2005 Mazda 323, Miata, MX-3, Protegé, Mercury Capri, Kia, Rio, and Kia Sephia L4 engine bearing, applications for B6 and BP 1.6L / 1.8L platforms, +0.25, oversize main bearing set. |
| Max wall at crown | 0.0793" (2.013mm) |
| Application | Performance rebuilds, OEM refresh, high-RPM use |
Shipping and returns
Shipping. Free on every order, US only. Orders arrive in 2–4 days.
Returns. 30-day returns, except in extreme cases.
Support. Our team is available 24/7 for fitment mismatches or any other reason.
Warranty. Full manufacturer guarantee.
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