What 208326 Actually Is
This is a 3-21/32 inch T-bolt clamp with a stainless steel band and stainless T-bolt, sized for a hose outside diameter between 3.50 and 3.75 inches. It clamps the turbocharger air crossover hose on Cummins 855 (NT855 / Big Cam) and N14 engines. It is a single clamp, not a hose kit, so check whether the rubber needs replacing at the same time.
T-bolt design matters here. A worm-gear clamp cuts into hot silicone and loses tension as the hose takes a set. The T-bolt spreads load evenly around the full band and holds clamping force through heat cycles, which is what a charge-air joint under boost needs. Stainless band and bolt also resist the corrosion that seizes a clamp in place after a few winters.
Applications include Class-8 trucks running these engines, such as Kenworth W900 and T800 and Volvo VNL. Engine family is the deciding factor, not the truck badge, so verify your engine serial number before you order rather than going off the hood emblem.
Why These Numbers Cross
Cummins 202995, PAI 042003, and Interstate-McBee M-208326 all describe the same physical clamp: same band width, same 3.50-3.75 inch clamping range, same T-bolt hardware for the turbo air crossover hose on 855 and N14 engines. The numbers differ because each supplier runs its own catalog scheme, not because the part changed.
Interstate-McBee's M-208326 is the clearest example. The M prefix is a house convention and the trailing digits mirror the base number. PAI 042003 sits in a separate numbering block entirely but lands on the same clamp in their exhaust and air handling listings. These are listed for identification only; PartStop is not affiliated with or authorized by any of these manufacturers.
A crossing number is a starting point, not a guarantee. Measure the outside diameter of your crossover hose and confirm it falls in the 3.50-3.75 inch window, and confirm the engine serial. If the old clamp is legible, read the number stamped on the band before ordering.
How This Clamp Fails
The usual complaint is a boost leak: low power under load, turbo whistle that changes pitch, or soot streaking at the crossover joint. Pull the clamp and you will often find the band has relaxed, the T-bolt threads are packed with rust, or the bridge has cracked from over-torquing. Once the band loses tension, the hose walks under pressure and the leak gets worse fast.
When you replace it, clean the hose seat and the tube bead before fitting. Snug the bolt evenly, run the engine to temperature, then re-check the torque cold. Replace clamps in pairs at a hose joint if both ends have seen the same heat and road salt, since the second one is usually not far behind the first.
208326 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 208326. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cummins | 202995 |
| Interstate-McBee | M-208326 |
| PAI | 042003 |
Frequently asked questions
Will 208326 fit my hose if I measure 3.8 inches OD?
No. This clamp is rated for a 3.50 to 3.75 inch hose outside diameter. At 3.8 inches you are past the range and the T-bolt will bottom out before the band seats. Measure the hose with a caliper or a wrap tape at the clamping point, not over the bead.
Is PAI 042003 the same clamp as 208326?
It cross-references to the same stainless T-bolt clamp for the turbo air crossover hose on Cummins 855 and N14 engines. That number is listed for identification only. Confirm by matching the number on your old clamp or by engine serial number before ordering, since a cross-reference is not a fitment promise.
Can I reuse the old T-bolt clamp after pulling the crossover hose?
Only if the band is straight, the bridge is uncracked, and the bolt turns freely by hand through its full range. A clamp that has heat-cycled for years has usually lost tension, and rusted threads give a false torque reading. If there is any doubt, replace it — it is cheaper than chasing the boost leak twice.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.