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Zipper’s Performance Products Oil Bypass Shim

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J&P Part: 741-004

Rating: Read Reviews

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Description

Zipper’s Performance Products Oil Bypass Shim

• Keeps oil pressure and flow consistent during operation

• Due to manufacturer inconsitencies in spring length and passage alignment the bypass valve may open prematurley or no fully close

• This shim ensures that the correct spring pressure is maintained at all times keeping flow and pressure consistent

• Fits all Twin Cam models

• Can be used with OEM or aftermarket oil pumps and cam plates

Made In The USA This product was proudly made in the USA

Product Specs

Finish: Natural

Manufacturer Part Number: 617-602

Material: Aluminum

Sold in Units: Each

Fitment

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Harley-Davidson® Models

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Customer Reviews

Overall Rating:
4/5 based on 7 ratings

5 by

I put this shim in along with a new Fueling OE plus Oil Pump. The pair had my bike idling at 45 psig. Too High... I removed the shim and got the pressure back in line. Bottom line is this thing should work great with a stock pump. Be sure to check the bypass plunger - make sure it moves freely in the cam plate.

4 by

As advertised

5 by

IMPROVED OIL PRESSURE TO TOP END,MADE THINGS A LOT LESS NOISEY.

1 by

No instructions or explaination of how to use. This would have made things a whole lot easier.

2 by

I didn't see any signifigant change in where my oil preasure gauge read while idleing. There was some increase at higher engine RPMs.

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