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om617 Intake Manifold Adapter
om617 Intake Manifold Adapter
om617 Intake Manifold Adapter
om617 Intake Manifold Adapter
om617 Intake Manifold Adapter
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om617 Intake Manifold Adapter

Are you adding a HE221 or Holset T25 frame turbo to your om617?  Modifying the intake...

om617 Intake Manifold Adapter

Are you adding a HE221 or Holset T25 frame turbo to your om617?  Modifying the intake manifold to accommodate a 2.5" intercooler inlet can be a pain in the ass for most folks.  We heard your cries and did something about it!

BenzForce has developed a manifold adapter that will slip inside the intake and, when tightened down, expand a specially designed ring inside the assembly to create an incredibly tight grip.  This adapter can be removed as well!  To ensure no boost is lost, not only have we incorporated an o-ring like the original coupler, but we also added a secondary seal inside the assembly to prevent the boost from escaping through the threads.

This adapter works in conjunction with our T3 to T25 adapter which drops the turbo slightly.

Installation is simple:

  1. Remove stock turbo and coupler
  2. Clean the inside of the manifold where the adapter will touch to make sure the two aluminum surfaces can grip
  3. Loosen the threads on the BenzForce manifold adapter to ensure the expansion ring is in its relaxed state
  4. Put a little oil on the small o-ring by the threads to prevent stuffing during the installation process
  5. Slide the adapter into the intake manifold
  6. Use a wrench or screwdriver and insert it into the grooves of the innermost part.  This part should stay stationary during the tightening process to prevent wear on the o-ring.  During the next step be careful not to slip to avoid injury as the edges by the two wrench notches can be sharp.
  7. Use the BenzForce wrench to turn the outermost nut until it is tight.  

On a couple of occasions, the casting on the intake manifold has made it difficult for the expansion ring to grip.  This can be caused by a rough casting, irregular surface finish, and/or excessive taper to the outside.  In these cases a tool such as a Dremel can be used to smooth the surface and even it out.  Before using this type of tool, the inside of the manifold should be blocked with a rag to prevent debris from entering the manifold. 


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Our policy lasts 30 days. If 30 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Additional non-returnable items:
- Gift cards / Gift Certificates
- Special orders (items not normally stocked and sourced by request by you)

To complete your return, we require an order number and date of purchase and advanced communication regarding the return.  Please use the contact us form to notify us and receive instructions prior to returning your item(s). 

Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund. If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.

Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again.
Then contact your credit card company, it may take some time before your refund is officially posted. Next, contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us through our contact us form.

Sale items (if applicable)
Only regular priced items may be refunded, unfortunately, sale items cannot be refunded.

Exchanges (if applicable)
We only replace items if they are defective or damaged. If you need to exchange it for the same item, send us an email through the contact us form and send your item to: BenzForce LLC, 15511 Hwy 71 West, Ste 110, #404, Austin TX 78738.

If the item was marked as a gift when purchased and shipped directly to you, you’ll receive a gift credit for the value of your return. Once the returned item is received, a gift certificate will be mailed to you.

If the item wasn’t marked as a gift when purchased, or the gift giver had the order shipped to themselves to give to you later, we will send a refund to the gift giver and he will find out about your return.

To return your product, you should mail your product to the address located in the website footer

You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of return shipping will be deducted from your refund.

Depending on where you live, the time it may take for your exchanged product to reach you, may vary.  If you are shipping an item over $75, you should consider using a trackable shipping service or purchasing shipping insurance. We don’t guarantee that we will receive your returned item.

Buyer is responsible for all import taxes, duties and fees.

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