Honda K20A3 Engine Bearings

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 ENGINE BEARINGS

CON ROD BEARING SET

MAIN BEARING SET

Part# Part#
4B1906H


4B1906HX

 
5M1959H

 
5M1959HX

 
Sizes STD, 025, .25, .50 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

1.7707in / 44.976mm

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

0.0591in / 1.502mm

0.0586in / 1.489mm

0.0790in / 2.007mm

0.0785in /1.994mm
Max Overall Length

0.6102in / 15.5mm

0.7874in / 20mm

Notes

Diagram       
(Top View) 

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

 
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