Honda B16A2, B17A1, B18A1, B18B2, B20B3, B20B8 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

1.7709in / 44.98mm

2.1646in / 54.98mm

Max Std Shaft Size

1.7717in / 45mm

2.1654in / 55mm

Min Std Tunnel Size

1.8898in / 48mm

2.3228in / 59mm

Max Std Tunnel Size

1.8907in / 48.024mm

2.3236in / 59.02mm

Max Wall at Crown

0.0592in / 1.504mm

0.0587in /1.491mm

0.0788in / 2.002mm

0.0783in /1.989

Max Overall Length

0.7677in / 19.5mm

0.7874in / 20mm

Notes

Diagram       
(Top View) 

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

 
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