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Audi 1781cc, 1984cc Engine Bearings Main Caps 5M1644H/5M1644HX

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ENGINE BEARINGS

CON ROD BEARING SET

MAIN BEARING SET

Part# Part#
4B1606H


4B1606HX

 
5M1644H

 
5M1644HX

 
Sizes STD, .025, .25, .50 STD STD, .25, .50 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

1.8802in / 47.758mm

2.1243in / 53.958mm
Max Std Shaft Size

1.8810in / 47.778mm

2.1251in / 53.978mm
Min Std Tunnel Size

1.9921in / 50.600mm

2.3228in / 59.000mm
Max Std Tunnel Size

1.9929in / 50.619mm

2.3236in / 59.019mm
Max Wall at Crown

0.0553in / 1.405mm

0.0548in / 1.392mm

0.0985in / 2.502mm 0.0980in / 2.489mm
Max Overall Length

0.748in / 19.00mm

0.728in / 18.49mm
Notes contains one oil hole Set contain 6 x 1648H and 4 x 1644H shells. Use 1648H shell in #4 position as upper and lower.

Diagram       
(Top View) 

 

Thrustwasher
Part# 2T1644 Material F817
Sizes STD Notes Use with engines equipped with thrustwashers