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New Front Engine Timing Gear Oil Jet (.040)
Fits 41-71 Jeep & Willys with 4-134 engine

Part # 641040

New Timing Gear Oil Jet

This is the jet nozzle that sprays oil under pressure inside your front timing cover.

This is the .040 oil hole one and NOT the .070

This is the later jet that was used when Willys determined the larger size port was not delivering adequate lubrication to the timing.

USA made.

4-134 engine

41-45 MB
41-45 GPW
46-49 CJ-2A
49-53 CJ-3A
53-64 CJ-3B
55-71 CJ-5
50-52 M38
52-66 M38A1
46-53 Truck
46-53 Station Wagon
48-51 Jeepster

Part # Price





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Questions & Answers

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Is there any reason I can't plug the .070 hole and drill a .040 hole in it's place?

Willys Jeep Parts Tech:
We do not advise making those sort of modifications.

"This is the later jet that was used when Willys determed the larger size port was not delivering adequte lubrication to the timing." Shouldn't it say, ' . . . not delivering adequate oil pressure at idle to the bearings.'? (Smaller hole = less flow)

The engineers at Willys became concerned about the No. 1 main bearing being starved of oil; their solution was to decrease this orifice size to bump the pressure and delivery to that bearing. Some say unnecessary, some say an needed upgrade.
Willys Jeep Parts Tech:
This is the later one. IE smaller hole - more pressure. This is the preferred jet by most people.
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