King Engine Bearings MB5304XPSTDX Mazda B6/B6-T/ZM/B3/B5 Main Bearing Set, Standard Size

King Engine Bearings Mazda B6/B6-T/ZM/B3/B5 Main Bearing Set - Size STDX

King Engine Bearings MB5304XPSTDX main bearing set is designed for Mazda B6, B6-T, ZM, B3, and B5 engine applications. This set is manufactured to support reliable crankshaft operation and consistent bearing performance in street, restoration, and performance-oriented engine builds. The STDX designation indicates a standard-size replacement configuration for crankshafts that remain within original factory specifications.

King Engine Bearings applies precision manufacturing and controlled material processes to help promote dependable oil retention, reduced friction, and long service life. The bearings are engineered to maintain proper clearance and support stable lubrication across a broad range of operating conditions. Proper crankshaft inspection and clearance verification are recommended before installation to confirm compatibility with the engine and ensure the desired bearing fit.

This King Engine Bearings main bearing set fits select Mazda Miata and Ford Escort applications, including the 2005 and 2004 Mazda Miata, along with Ford Escort model years from 1991 through 1996 where equipped with the applicable engine. Always verify engine code, crankshaft condition, and required bearing size before ordering. The set is intended for automotive engine service and is supplied as one complete main bearing set.

What's Included

• One King Engine Bearings MB5304XPSTDX main bearing set
• Main bearing shells for compatible Mazda and Ford engine applications

Features:

• Application Coverage: Designed for Mazda B6, B6-T, ZM, B3, and B5 engine families.
• Standard-Size Fit: STDX configuration supports crankshafts maintained within original standard specifications.
• Precision Manufacturing: Produced for consistent bearing geometry and dependable engine assembly results.
• Reliable Performance: Supports proper lubrication, controlled friction, and durable crankshaft operation in automotive applications.

Fitments:
1986 Mazda 323 Base
1986 Mazda 323 DX
1986 Mazda 323 LX
1987 Mazda 323 Base
1987 Mazda 323 DX
1987 Mazda 323 LX
1988 Mazda 323 Base
1988 Mazda 323 DX
1988 Mazda 323 GT
1988 Mazda 323 GTX
1988 Mazda 323 LX
1988 Mazda 323 SE
1989 Mazda 323 Base
1989 Mazda 323 GTX
1989 Mazda 323 LX
1989 Mazda 323 SE
1990 Mazda 323 Base
1990 Mazda 323 SE
1990 Mazda Protege 4WD
1990 Mazda Protege LX
1990 Mazda Protege SE
1991 Ford Escort GT
1991 Mazda 323 Base
1991 Mazda 323 SE
1991 Mazda Protege 4WD
1991 Mazda Protege DX
1991 Mazda Protege LX
1991 Mercury Capri Base
1991 Mercury Capri XR2
1991 Mercury Tracer LTS
1992 Ford Escort GT
1992 Ford Escort LX-E
1992 Mazda 323 Base
1992 Mazda 323 SE
1992 Mazda Protege DX
1992 Mazda Protege LX
1992 Mercury Capri Base
1992 Mercury Capri XR2
1992 Mercury Tracer LTS
1993 Ford Escort GT
1993 Ford Escort LX-E
1993 Mazda 323 Base
1993 Mazda 323 SE
1993 Mazda Protege DX
1993 Mazda Protege LX
1993 Mercury Capri Base
1993 Mercury Capri XR2
1993 Mercury Tracer LTS
1994 Ford Escort GT
1994 Mazda 323 Base
1994 Mazda Miata Base
1994 Mazda Miata M Edition
1994 Mazda Protege Base
1994 Mazda Protege DX
1994 Mazda Protege LX
1994 Mercury Capri Base
1994 Mercury Capri XR2
1994 Mercury Tracer LTS
1995 Ford Escort GT
1995 Mazda Miata Base
1995 Mazda Miata M Edition
1995 Mazda Protege DX
1995 Mazda Protege ES
1995 Mazda Protege LX
1995 Mercury Tracer LTS
1996 Ford Escort GT
1996 Mazda Miata Base
1996 Mazda Miata M Edition
1996 Mazda Protege DX
1996 Mazda Protege ES
1996 Mazda Protege LX
1996 Mercury Tracer LTS
1997 Mazda Miata Base
1997 Mazda Miata M Edition
1997 Mazda Miata STO
1997 Mazda Protege DX
1997 Mazda Protege ES
1997 Mazda Protege LX
1998 Mazda Protege DX
1998 Mazda Protege ES
1998 Mazda Protege LX
1999 Mazda Miata 10th Anniversary
1999 Mazda Miata Base
1999 Mazda Protege ES
2000 Mazda Miata Base
2000 Mazda Miata LS
2000 Mazda Miata SE
2000 Mazda Protege ES
2001 Kia Rio Base
2001 Mazda Miata Base
2001 Mazda Miata LS
2001 Mazda Miata SE
2002 Kia Rio Base
2002 Kia Rio Cinco
2002 Mazda Miata Base
2002 Mazda Miata LS
2002 Mazda Miata SE
2003 Kia Rio Base
2003 Kia Rio Cinco
2003 Mazda Miata Base
2003 Mazda Miata LS
2003 Mazda Miata SE
2003 Mazda Miata Shinsen
2004 Kia Rio Base
2004 Kia Rio Cinco
2004 Mazda Miata Base
2004 Mazda Miata LS
2004 Mazda Miata Mazdaspeed
2005 Kia Rio Base
2005 Kia Rio Cinco
2005 Mazda Miata Base
2005 Mazda Miata LS
2005 Mazda Miata Mazdaspeed

Air Freight Prohibited: false
Not Carb Approved: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1