Product Description

New exhaust manifold conversion kit for OMC Ford 302/351 marine gas engines. Replaces the old end rise (log style) manifolds and risers, part numbers 913682, 913683, 909218, 982680, or 909863, with new and more efficient center rise manifolds and risers. Please note that this does not replace the "Banana" style OMC Ford manifolds.

This kit is new, high-quality cast iron construction, and is made in the USA. For tips on replacing exhaust manifolds and risers, see my eBay guide.

Part numbers contained in this kit and cross reference:

ManifoldsPart Number
Indmar53-2008
Osco MotorsFL994
Barr MarineFM-1-83
Sierra Marine18-1998-1
Aqua Power5504
GLM Products56250

RisersPart Number
Marine Power0992-000
Osco Motors992
Barr Marine20-0082
Sierra Marine18-1999
Aqua Power5705
GLM Products56110

Payment

  • PayPal is the preferred method to make secure payments with a credit/debit card or bank account.
  • Sales tax of 9.2% is charged for destinations inside Washington state USA. Other states are not charged tax. International destinations may have an import duty/tax that cannot be calculated here (please contact your customs department).

Shipping and Tracking

  • Items ship the same day if purchased on a business day before 1pm for UPS or 10am for USPS (PST).
  • Tracking info is emailed once an item ships, and is also available in your Purchase History on eBay. Double-check that your email address is correct and confirmations aren't going into spam/junk folders.
  • Faster shipping options are available in the Shipping and Payments section.
  • Business days are Monday through Friday, not including holidays.
  • Pickup is not available. All items must be shipped.

International Buyers

  • Items heading outside the USA cannot be used for government or military applications of any kind. The seller and marketplace expressly disclaim liability for misuse of its products.
  • Shipping prices shown do not include import taxes or customs duties. Contact your country's customs department for more information.
  • Items cannot be marked as gift or have a lowered value on the documentation. It is unlawful to forge international documents.
  • Most international shipments go via DHL Express or USPS Express Mail.

Warranty and Returns

This item has a Limited lifetime warranty covering any manufacturer defects. Defective items are generally replaced within a few business days, plus time in transit, and there will never be any extra cost to you.

Lost Items, Damage, or Other Problems
If your item has a problem, such as being delayed, lost, or damaged by the shipping company, or if there are missing components, please send an eBay Message or Email right away describing the nature of the problem and its urgency (include pictures if possible). Everything will be done to assist you in a timely manner and there will never be any additional cost to you.

Regular Returns
You may return an item if you no longer need it or don't want it anymore. Returns are accepted on items still in the same condition they arrived in. There may be a 15% restocking fee and all shipping costs must be covered by the buyer. To initiate a return, log in to eBay, go to your "Purchase History", and use the "Return" link next to the transaction.

Frequently Asked Questions

Q: Who manufactures this item?
This item is manufactured by Sierra.

Q. What are the shipping dimensions and weight?
This item ships in a box approximately 20" x 18" x 16" and weighs approximately 138 lbs.
Please read the information above thoroughly before asking a question. Questions are answered Mon-Fri 8am-4pm PST. All coorespondance must be via Email or eBay Message.

Thank you for your time!