What you're buying
This is a straight stick, not a molded elbow - 2.5 inch inside diameter, 36 inches long, 4-ply silicone construction. Guys use these on coolant lines and heater circuits where the factory rubber hose cracked or swelled, and there's no tight bend involved so a straight cut works fine.
4-ply means it's got some backbone to it - won't collapse under vacuum on the suction side and handles the heat cycling a lot better than the single-ply rubber stuff Kenworth and Peterbilt ran from the factory. That's why guys reach for silicone when they're doing this job the second time.
Since it's a straight stick you trim it to length with a sharp blade or a hose cutter, so it'll work across a range of applications - not just one specific truck model. The 2.5 inch ID is what has to match your old hose, not the length.
Why these numbers cross
D10302650 is the number this shows up under, and it cross-references to 24840, H42-250, 561.12250, and 57240 because those are all the same 2.5 inch straight silicone stock from different hose houses and truck part suppliers repackaging it. Silicone hose like this isn't proprietary to one truck brand - it's generic stock cut to a common ID.
The thing to actually check is inside diameter and wall thickness, not the part number on the box. If your old hose measures 2.5 inch ID and is a straight run with no molded bends, any of these will work. If you've got a reducer, elbow, or step in the hose, none of these straight sticks will do the job right.
Pull the old hose and measure it yourself, or find the number stamped or printed on it if it's still legible. Don't just match against a parts book listing - hose suppliers change their internal numbering all the time and what's clocked as an exact cross today might get renumbered next year.
Buying it from us
We keep this in stock at the Tacoma counter for the guys who need it same day - walk in, grab it, cut it on the spot if you want. If you're not local we ship it nationwide, no issue getting it to you before your truck's back down for the count.
At $46.94 for a 3 foot stick of 4-ply silicone, it's not the cheapest hose on the shelf, but it's not built to be either - this stuff outlasts the cheap single-ply rubber by a good margin under sustained heat.
Comes with our standard 6+ month warranty. If it doesn't fit your application because of the diameter or you ordered the wrong length, bring it back - just don't cut it until you're sure, because we can't take back a hose that's already been trimmed to a weird length.
D10302650 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to D10302650. 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 | 24840, H42-250, 561.12250, 57240 |
Frequently asked questions
Does D10302650 fit my Kenworth T680?
Depends on what hose you're replacing and where. This is a straight 2.5 inch ID silicone stick, so it'll work if the run on your T680 is a straight section at that diameter - common on some coolant and heater lines. Pull your old hose, measure the ID, and confirm there's no bend or step before you order. If it's molded with an elbow, this straight stock won't do it.
Is this the same as the Gates 24840?
Same general spec - 2.5 inch ID straight silicone hose - and it's listed as a cross to D10302650, so it should install the same way. Different manufacturer, same intended fitment. Still worth double-checking the ID and ply rating against your old part before you commit, since suppliers don't always agree on exact wall thickness.
Can I use this for turbo or charge air cooler lines instead of coolant?
Silicone hose like this is often multi-purpose and can handle CAC boost pressure and heat, but confirm the pressure rating fits your application - a straight coolant hose spec isn't always rated the same as a dedicated CAC hose. If you're not sure, tell us what system it's going on and we'll steer you to the right part.
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.