Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

The Clevite MS1802A25MM is an A-Series crankshaft main bearing set in 0.25 mm undersize for the 1990-1997...
Vendor: Clevite
SKU: CLEMS1802A25MM
Availability: Available to Order
Product type: Bearings
$71.33
$71.33
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Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

Clevite

Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

$71.33
Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

Clevite

Clevite A-Series Main Bearing Set (0.25mm Undersize) - NA/NB Miata (90-05)

$71.33
Product Details

The Clevite MS1802A25MM is an A-Series crankshaft main bearing set in 0.25 mm undersize for the 1990-1997 Mazda Miata (NA) and 1999-2005 Mazda Miata (NB). It is a full engine set; one set does one engine. Thrust washers are not included: Clevite's catalog states that this set requires a thrust washer set and names TW-472S.

  • Full engine main bearing set; one set per engine
  • Thrust washers NOT included. Clevite specifies thrust washer set TW-472S, sold separately
  • Size: 0.25 mm undersize, for main journals reground to 1.9610-1.9617 in. Not for a standard-size crankshaft
  • Housing bore 2.1260-2.1267 in; maximum wall thickness 0.08411 in; vertical oil clearance 0.0009-0.0017 in
  • Clevite A-Series, catalogued as OE Replacement grade; bearing material AL-3. Country of origin: Japan
  • Clevite lists the same set in Standard size as MS1802A. Measure every journal with a micrometer and check assembled oil clearance before choosing a size

Fitment: Crankshaft main bearings. 1990-1997 Mazda Miata (NA) and 1999-2005 Mazda Miata (NB). Clevite's catalog lists this part number by year, make and model only, with no engine, trim or transmission split. Not listed for the 2006+ MX-5 Miata (NC/ND).

Part number: Clevite MS1802A25MM

This Part Fits:

Year Make Model Submodel
1990-1997 Mazda Miata All
1999-2005 Mazda Miata All
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