TRW UD pully ?

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07-03-2010, 03:26 PM

00blacka4

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TRW UD pully ?

my buddy wants to sell me an underdrive pully for 100 bucks, it says TRW on it and like 4521 or something...just wondering if anyone has heard of it and if its a 25% underdrive....it also says SSI approved...thanks ! its black

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07-03-2010, 04:57 PM

1gt2nv

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Nope, never heard of it. Google it.

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07-03-2010, 05:52 PM

NVR_SPDS

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Never heard of a TRW UD Pulley. I know my Powerbond is all black, and SFI certified.

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07-03-2010, 05:53 PM

00blacka4

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probably a powerbond, anyway i picked it up for 100 bucks so i think i got a good deal, something to add to the pile of parts going in my car

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07-04-2010, 12:19 PM

2nd Gen Fl 'bird

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p/n 4521 is a March Pulley number. If I've gatherd info correctly, it's a Fluid Damper pulley sold under the March name. Still a very good damper and it is 25% ud.