Cosworth Billet Timing Belt Guide

Manufacturer Part # SB0001



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Cosworth 99.5 Motor Build Package 08-17 STi ( Part Number:COS1 99.5KIT1)
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Replaces the factory sheet metal timing belt guide to help reduce the possibility of the timing belt skipping a tooth during high rpm use. Precision machined from aluminum with a hard anodized finish.
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Brand: Cosworth
Installation Hardware Included: Yes
Material: Aluminum
Mfgr. Warranty: 1 year
Return Policy:

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Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


Verified Purchase

Caused damage
thacasketmaker 2 years ago
This belt guide I did research on before I bought it. Found it it would fit with a Gate Racing timing belt. Awesome! 2 months later and only 6k on fresh rebuild(that includes the timing belt and all the tensioners bought brand new from RSd). This belt guide did not clear my belt. It did before we put the timing covers on. Then when we pulled them back off for other reasons and this suppose tested part that fits a gates racing timing belt chewed my entire timing belt up on the outside.Bolts were still tight and torque to correct specs when inspected. There is no adjustment to this piece as I read from cosworth. It fits one way and way only no up and down adjustment and no side to side adjustment. Would not recommend this part to anyone. Buyer beware if running the gates racing timing belt!!!
Verified Purchase

great product
jfmartel1749086 2 years ago
perfect fittment ,i previously had an other brand that ended up on the shelf because clearances were way off. after fitting an oem that grooved the timing belt i decided to try this one. and fitment is nice A1
Verified Purchase

Cosworth Timing Belt Guide
Wayln 3 years ago
Outstanding product perfect fit and customer service was steller=o) I was going to go with the Tomei guide but decided on this one instead very happy.
Verified Purchase

Just awesome!
gustavo 4 years ago
Just perfect as always. Thank you RSD for your great service.
Verified Purchase

Worth the cash
BobbyJ 4 years ago
I upgraded from a Tomie timing belt guide. This looks and feels so much better. It’s thicker and covers the howl belt not like the Tomie one. Thanks Rally Sports Direct for the speedy service and delivery all the way to Australia. It took less than 4 days to arrive from the time I placing the order.

  • Q: Fitting  Sniper0202 4 years ago


    Does this fit Sti 2011 models? Thanks

    • A: Yes, It will fit.

      Kyle A. 4 years ago
  • Q: Gates RACING timing belt?  krinkle 4 years ago


    Will this work with the Gates RACING timing belt which is thicket.

    • A: Cosworth said, We revised the guide to have a little more adjustment. You should be able to achieve the proper clearances with the Gates belt.

      Zach G. 4 years ago
    • A: Cosworth has verified that this timing guide will work with the Gates Racing timing belt.

      Zach G. 4 years ago
  • Q: question  dope_its_danny 4 years ago


    would you recomend this guide with the gates TB kit?

    • A: We revised the guide to have a little more adjustment. You should be able to achieve the proper clearances with the Gates belt. Thank you

      4 years ago
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