Sealed Power 4-3910RA Engine Connecting Rod Bearing Set
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Sealed Power

Sealed Power 4-3910RA Engine Connecting Rod Bearing Set

Brand Sealed Power 4-3910RA
Housing Bore Max (Inch) 1.6937
Housing Bore Max (MM) 43.0200
Housing Bore Min (Inch) 1.6929
Housing Bore Min (MM) 43.0000
Oil Clearance Max (Inch) 0.0030
Oil Clearance Max (MM) 0.0760
Oil Clearance Min (Inch) 0.0010
Oil Clearance Min (MM) 0.0240
Overall Length Max (Inch) 0.6690
Overall Length Max (MM) 17.0000
Standard Shaft Max (Inch) 1.5730
Standard Shaft Max (MM) 39.9560
Standard Shaft Min (Inch) 1.5725
Standard Shaft Min (MM) 39.9400
Wall Thickness Max (Inch) 0.0594
Wall thickness Max (MM) 1.5100
Fits Mazda and Ford · 14 vehicles

Standard size. A full bearing set for straightforward replacement.

Precision oil clearance. Maintains tight tolerances for consistent lubrication.

Modern-engine materials. Built with advanced materials and certified manufacturing.

Cross-references 4B8331, 4B9513 and 0145821 for the same application. See all 20.

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Sealed Power Connecting Rod Bearing Set

Sealed Power 4-3910RA is a standard-size engine connecting rod bearing set for A-Series aluminum engines. It is built for the Ford Festiva, Ford Aspire, and Mazda Protege applications listed below, with dimensions and oil clearance ranges that support proper rod bearing service in the correct engine family.

  • Standard size connecting rod bearing set for A-Series aluminum engines
  • Full set configuration for engine connecting rod bearing service
  • Housing bore max/min: 1.6937 in. / 1.6929 in. (43.0200 mm / 43.0000 mm)
  • Standard shaft max/min: 1.5730 in. / 1.5725 in. (39.9560 mm / 39.9400 mm)
  • Oil clearance range: 0.0010 in. to 0.0030 in. (0.0240 mm to 0.0760 mm)
  • Overall length max: 0.6690 in. (17.0000 mm)
  • Wall thickness max: 0.0594 in. (1.5100 mm)

Fitment Details

  • Fits 1995-1998 Mazda Protege, N/A. Fits standard size engine connecting rod bearings for A-Series aluminum engines.
  • Fits 1994-1997 Ford Aspire, N/A. Fits standard size engine connecting rod bearings for A-Series aluminum engines.
  • Fits 1988-1993 Ford Festiva, N/A. Fits standard size engine connecting rod bearings for A-Series aluminum engines.

This part cross-references 4B8331 and CB1279A4 for the same application.

What This Part Helps Address

  • Rod bearing wear in A-Series aluminum engines
  • Excessive crankshaft clearance from worn bearing surfaces
  • Low oil pressure concerns related to bearing clearance issues
  • Engine noise caused by worn connecting rod bearings
  • Service replacement needs during engine rebuild work

Installation Notes

Verify crankshaft journal size, housing bore, and oil clearance before assembly. This Sealed Power 4-3910RA bearing set is a standard-size part, so it should be matched to the engine’s measured dimensions rather than assumed from the vehicle alone. Clean all bearing surfaces thoroughly and follow factory torque and lubrication procedures during installation.

Quality Assurance

Sealed Power uses modern materials and ISO- and QS-certified manufacturing processes to produce engine parts that meet demanding service requirements. The 4-3910RA is built to support consistent fit and dimensional control for the listed Ford Festiva, Ford Aspire, and Mazda Protege applications.

Related reading

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1998MazdaProtege1.5LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1997FordAspire1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1997MazdaProtege1.5LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1996FordAspire1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1996MazdaProtege1.5LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1995FordAspire1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1995MazdaProtege1.5LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1994FordAspire1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1993FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1992FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1991FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1990FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1989FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
1988FordFestiva1.3LL4N/AFits standard size engine connecting rod bearings for A-Series aluminum engines.
Directly replaces or cross-references 20 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
4B83314B95130145821803423105893623105B5B623105CB1279A4CB1279ALCB1279AL4CB1279SCR4495AME8BZ6211AE58023105PCB17110R313ARBFD2RBMA3VP91877AVPR91877AW12382