# Prius OEM vs After market Catalytic Converter

**URL:** <https://community.cartalk.com/t/prius-oem-vs-after-market-catalytic-converter/39804>\
**Category:** Maintenance/Repairs\
**Tags:** catalytic-converters, prius, toyota\
**Created:** [November 21, 2009, 4:00pm UTC](https://community.cartalk.com/t/prius-oem-vs-after-market-catalytic-converter/39804 "2009-11-21T16:00:13Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bats01](https://avatars.discourse-cdn.com/v4/letter/b/d07c76/32.png) [@bats01](https://community.cartalk.com/u/bats01)\
**Post date:** [November 21, 2009, 4:00pm UTC](https://community.cartalk.com/t/prius-oem-vs-after-market-catalytic-converter/39804/1 "2009-11-21T16:00:13Z")

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My 2002 Prius with 110K miles has a check engine light Misfire code 301, 02 sensor, ‘420’ in there somewhere. Dealer wants $1,700 for new catalytic converter ‘assembly’. After market prices on Internet range from $185-$450. Any experience on this board to help me make the decision?

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**Author:** ![mcparadise](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mcparadise/32/32_2.png) [@mcparadise](https://community.cartalk.com/u/mcparadise)\
**Post date:** [November 21, 2009, 4:04pm UTC](https://community.cartalk.com/t/prius-oem-vs-after-market-catalytic-converter/39804/2 "2009-11-21T16:04:32Z")

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I’d get another opinion about the necessity for a new cat. Sometimes replacing the O2 sensors returns the catalytic convert to normal operation.