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Part number: 44999-AK001
Product Details
HKS 44999-AK001 A/F Knock Amp Accessories
O2 Sensor Boss & Bolt Set

Just bought your HKS A/F Knock Amp and want to get it up and running ASAP Well you may need some of these accessories. An O2 sensor will help (might as well keep a backup) and you ay need a Senson Boss to install it in your downpipe. A Harness might be necessary and might as well grab a Connector Set while you?re at it.

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Great service
Easy transaction other than the fact that it wouldn't process my VISA card that had $7500 available on it, but they may have been a card glitch. Simple and affordable.
good price
Made a hard to find part easy.When I received the part it looked like a return from the tape job on the box. Part looked new but handled in an attempted install way of appearance. I'm sure it'll be fine.
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