What You're Getting
This is straight coolant hose, not molded - a 3-foot length of 3.5" ID, 4-ply silicone you cut to the length you need. Guys use it for radiator-to-engine runs, surge tank lines, or splicing in a repair section on Kenworth W900/T800 and Peterbilt 379/389 cooling systems where the factory hose finally gave up.
4-ply means you've got more reinforcement layers than a basic 2-ply hose, so it handles the heat cycling and pressure better over the long haul. Silicone doesn't get brittle and crack like rubber does after a few summers, which is why it's become the standard for coolant lines on these trucks.
F02509S352 is the Peterbilt/Kenworth-style part number floating around for this exact spec - 3.5 ID, 3ft stick, 4-ply. If your old hose has a tag or stamp, check it against that before you order.
About the Cross-Reference Numbers
EH22656 crosses to Gates 561.09350 and 561.08350 series numbers - these are all straight silicone stock hose in the same 3.5" ID with similar ply construction, which is why they interchange. Straight stock hose is more forgiving than molded elbows since there's no bend geometry to match, but ID and wall thickness still have to line up.
Where guys get burned is ID tolerance and ply count. A 3.5" ID hose from one supplier might run a hair tighter or looser than another, and if you're clamping to a metal neck that's already been worked over with old clamps, that difference matters. Also double check ply - some 561-series Gates numbers are 2-ply, others 4-ply, so don't assume every number in that family matches this spec.
Bottom line: match ID first, then ply and wall thickness against your old piece. If you're not sure, pull the old hose and measure it or bring it in - we've got a shop right here in Tacoma and can eyeball it in two minutes.
Ordering From PartStop
We stock this in Tacoma so if you're a local fleet or owner-op needing it same day, come by or call ahead and we'll have it at the counter. We also ship nationwide if you're not in the area - most orders go out same or next business day.
Every hose we sell carries our 6+ month warranty against defects, but that's not a fit guarantee - cutting and clamping is on you, so measure twice. If it turns out to be wrong for your application, we'll sort out an exchange, just don't cut it first.
Confirm by VIN or by cross-checking the number stamped on your old hose before you order. On cooling system parts especially, a wrong-size hose either won't seal or will kink under pressure, and neither one is a fun roadside problem.
EH22656 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to EH22656. 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 |
|---|---|
| OE/Cross-Ref | 561.09350, 561.08350 |
Frequently asked questions
Does EH22656 fit my Kenworth W900?
Depends on your cooling system routing and what size hose is currently in there. This is 3.5" ID straight stock - if your old hose measures out to that, it should work, but confirm against your VIN or the old part number since W900s ran different radiator configs over the years.
Is this the same as Gates 561.09350?
Same family, same 3.5" ID silicone construction, and it's one of the numbers that cross-references to EH22656. Ply count can vary across the 561-series though, so verify the ply spec on your old hose matches before assuming it's a straight swap.
Can I cut this hose shorter for a smaller gap?
Yeah, that's the point of stock hose - it comes as a 3-foot length so you trim to fit. Just make sure you've got enough clean straight hose left on each end for proper clamp seating, don't cut it right at the minimum.
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.