What this thing actually is
It's a threaded coolant level probe, not a temp sender. It reads whether there's fluid touching the tip inside the surge tank — no coolant contact, dash light comes on and usually pulls the truck into derate territory if it sits long enough. Common failure is the sensor tip getting coated in scale or the wire pigtail corroding at the connector, not always a real low-coolant situation.
Fits Volvo VN/VNL/VNM trucks roughly 2004 up through the current VNL body style, and the same part got used across a chunk of Mack chassis that share Volvo's cooling architecture after the merger — Pinnacle, Anthem, some Granite applications depending on year and engine.
This is a straightforward R&R — drain down a little coolant, unclip the old one, thread the new one in, plug in the harness. No calibration needed on these.
Why all these numbers point to one part
22564822 is the current Volvo number. 22229570 and 222299570 (that second one's just a typo floating around parts catalogs, same sensor) are earlier or superseded Volvo part numbers before the parts book got updated. 577.96504S is how Mack lists the identical sensor in their system. 22564822KTP shows up as a kit version with the connector/pigtail included on some listings — worth checking if your old one has a chewed-up plug end.
There's no spline count or arm length to worry about with this one — it's a straight thread-in probe with one wire connector, so the cross mostly comes down to thread size and connector style matching, both of which are consistent across these numbers.
Still, don't just go by shape. Pull the old sensor and read whatever number's stamped or printed on the housing or tag, or run your VIN, before you order. Volvo and Mack both juggled minor connector revisions over 20 years of VNL/VNM production, and a mismatched plug is the usual headache we hear about after the fact.
Ordering it from us
$68.99, comes with the 6+ month warranty like everything else we sell. If you're in the Tacoma area and your rig's sitting with a low-coolant light, call ahead and we'll have it up front for same-day pickup instead of you waiting on a truck.
Not local — no problem, we ship nationwide and most orders move same day if you order before mid-afternoon. Give us the VIN or the number off the old sensor when you call and we'll confirm before it goes out, not after.
22564822 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 22564822. 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 |
|---|---|
| Cross-Reference | 577.96504S, 22229570, 20900982, 222299570, 22564822KTP |
Frequently asked questions
Does 22564822 fit my 2016 VNL 670?
Likely yes, but confirm with your VIN or pull the old sensor and check the number stamped on it — Volvo made minor connector changes over the VNL's run and we'd rather check first than have you sending one back.
Is this the same part as Mack 577.96504S?
Yes, that's the Mack-side number for the identical sensor used on Volvo-platform Mack trucks like Pinnacle and Anthem. Same probe, same connector, Mack just catalogs it under their own part number.
My old sensor's connector is broken, do I need the KTP version?
If the wiring pigtail or plug is damaged, look at 22564822KTP, which includes the connector end. Straight swap with no wiring issues, the standard 22564822 is all you need.
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.