FAQs

For in stock items, same day shipping cutoff is 1:00pm Pacific Standard Time, Monday – Thursday.

For in stock items, orders usually ship the same day if received by 1:00pm Pacific Standard Time, Monday – Thursday

Prepaid on orders over $1800

Yes, just provide customer service with your account number.

Yes, if you are a direct customer.

Sorry but we only sell to direct customers on a wholesale basis.

Please submit a credit application located under the “Contact” section of our website.

Please note there are minimum annual purchase requirements to open a direct account with us.

For small orders or retail purchases, we have authorized distributors who can help you with our product.

Valve Seats are packaged 12 or 100 per box.

Valve Shims are packaged Regular Series 100 or 500 per box, HP Series 50 or 250 per box.

Engine Hardware is packaged 25 or 100 per box.

30000 – Unleaded – Light to Medium Duty

70000 – Unleaded, Propane, LPG, Natural Gas, and Diesel – Heavy Duty

90000 – Unleaded, Propane, LPG, Natural Gas, and Diesel – Extreme Duty

Copper Infiltrated – Unleaded, Propane, LPG, Natural Gas, and Diesel – High Performance

Please see “Valve Seat Installation Instructions”

Please see “Valve Seat Installation Instructions”

Please see “Optimum Placement of Camshaft Bearing Oil Feed Hole Location”

Yes, the CH-25 can be used as a substitute of the CH-23, but not the other way around.

Please see “How To Install A Cam Bearing”

Please watch “Dura-Bond Quick Bore System” Video.