Acura/Honda B16A2, B16A3, B17A1, B18A1, B18B1, B20B, B20Z Engine Bearings

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 ENGINE BEARINGS

CON ROD BEARING SET

MAIN BEARING SET

Part# Part#
4B1946H


4B1946HX

 
5M1959H

 
5M1959HX

 
Sizes STD, 025, .25 STD STD, 025, .25 STD
Oil Clearance Standard + 0.001" Extra Standard + 0.001" Extra
Half Type Identical Halves Upper & Lower
Material

Tri-metal Hardened steel backs

Tri-Metal
Min Std Shaft Size

1.7709" / 44.980mm

2.1646" / 54.980mm

Max Std Shaft Size

1.7717" / 45.000mm

2.1654" / 55.000mm

Min Std Tunnel Size

1.8898" / 48.000mm

2.3228" / 59.000mm

Max Std Tunnel Size

1.8907" / 48.024mm

2.3236" / 59.020mm

Max Wall at Crown

0.0592" / 1.504mm

0.0587" /1.491mm

0.0790" / 2.007mm

0.0785" /1.994mm

Max Overall Length

0.768" / 19.50mm

0.787" / 20.00mm

Notes

Diagram       
(Top View) 

 THRUSTWASHER SET
Part# 1T1957 Material Aluminum Tin
Sizes STD Notes Identical Halves

 
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