What This Hose Does
The 20463924 hose carries hot coolant in the turbocharger cooling circuit. It sees pressure spikes, constant thermal cycling, and an engine bay that never really cools down. That combination is what kills hoses. The rubber hardens, the wall thins at the bend, and eventually you get a seep at the clamp or a split on the inside radius where you cannot see it.
Our aftermarket version is built from 4-ply reinforced silicone rated from -40F to +500F. It handles 30+ PSI boost pressure without ballooning. Silicone does not go brittle in a Midwest January and does not turn soft and mushy sitting behind a hot turbo in July, which is the failure pattern most standard EPDM rubber hoses follow.
Oil mist, coolant, and ozone all attack hose material over time. The silicone construction resists all three and typically outlasts standard rubber by roughly three times in service. Clamp diameters match the factory sizes and the hump locations line up, so it goes on with hand tools and no rerouting.
Why These Numbers Cross
20463924 is the number stamped or tagged on the original equipment part. MP-084VV is the Mass Parts catalog number for the same hose. They cross because both describe the identical physical part: same inside diameter, same overall length, same bend geometry, same clamp landing positions on each end.
Cross-referencing works on form and function, not on branding. A hose either drops into the same two connection points at the same angle or it does not. When two catalog numbers resolve to the same molded shape and the same coolant duty, they are interchangeable regardless of whose box they arrive in. That is all a cross-reference number tells you.
PartStop is not affiliated with, endorsed by, or authorized by Volvo or any other original equipment manufacturer. Other manufacturers' numbers appear here for identification purposes only, so you can match what you pulled off the truck to what we sell. Treat the cross-reference as a starting point, not a fitment guarantee.
Before You Order
Read the number off the old hose first. Volvo runs revisions across model years, and a truck built in 2014 does not always carry the same hose as one built in 2022 even with the same engine family. If the tag is gone or the printing has cooked off, verify by VIN through a dealer parts counter before you commit.
Pull the old hose and inspect the fittings while you are in there. Look for pitting on the tube nipples, a collapsed inner liner, and clamps that have cut into the rubber. Replace worn clamps rather than reusing them. Check coolant condition too — a hose that failed early usually had help from something else in the system.
20463924 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 20463924. 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 |
|---|---|
| Mass Parts (MP-prefix) | MP-084VV |
Frequently asked questions
Will 20463924 fit my 2018 Volvo?
This hose is cataloged for Volvo heavy-duty trucks from 2014 through 2024, so a 2018 falls in that window. That said, a cross-reference is a starting point and not a fitment promise. Confirm by the number printed on the hose you are removing, or verify by VIN before ordering.
Is MP-084VV the same part as 20463924?
Yes. MP-084VV is the Mass Parts catalog number for the same charge turbo cooler hose. Same length, same bend, same clamp diameters. Both numbers are listed so you can find the part whichever number you happen to have written down.
How do I know if the hose is bad or if it's a clamp?
Pressure test the cooling system cold and look for a bead of coolant forming. If it weeps at the clamp band, back the clamp off and check for a cut or a hardened, glazed sealing surface — that means the hose is done. Squeeze the mid-span too; a hose that feels soft, spongy, or crackles has lost its structure and should be replaced.
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.