What's in the box and what it fits
This is the full cylinder head gasket set for the DD15, covers 2007 up through the current DD16 production, not just the head gasket itself but the fire ring, the injector sleeve seals, valve cover gaskets and the small hardware that walks off if you don't buy a kit.
DD15 went through a few running changes over the years - injector cup depth, dowel placement, that kind of thing - so this kit is built to cover the range Detroit issued under this number, not a universal stab in the dark.
If you've got a DD13 sitting next to it, don't grab this one by mistake. Different bore, different fire ring diameter, and it will look close enough to bolt up before it lets go on you at 1500 miles.
Why the cross numbers show up and what to check before you order
A4720162120 gets superseded and relabeled a handful of ways - A-A4720162120 is just the Detroit prefix version, A4721421880 and A4720160680 show up as running changes Detroit made to the base gasket material or fire ring design, and FP-23520024 is the aftermarket manufacturer's own part number for a gasket set built to the same spec.
None of that means grab whichever one's cheapest and hope. The number that matters is the one stamped or printed on your old gasket kit box, or better, pull your engine serial and check it against your VIN before you order. Detroit changed fire ring thickness and injector seal depth more than once on this platform and a kit built for an early DD15 won't necessarily seal right on a late one.
A4722000154 and A4600700887 are also cross-listed here because they hit the same head gasket application, but if your engine's had head work done before, previous mechanic notes or the old parts invoice are worth five minutes of digging before you order new.
Ordering from PartStop
We stock this one in Tacoma and if you're local, same-day pickup is the norm, not the exception - call ahead if you're mid-teardown and need it in the next hour.
Ship nationwide if you're not close, and we get it out same day on anything ordered before early afternoon.
Comes with our 6+ month warranty. If it's the wrong kit for your application we'll sort the return, but check your VIN or engine serial first - saves everybody a shipping charge both ways.
A4720162120 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to A4720162120. 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 | A-A4720162120, A4721421880, FP-23520024, A5411870080 |
| Detroit Diesel | A4600700887, A4720162220, A4720160680, A4722000154 |
Frequently asked questions
Does A4720162120 fit my 2019 DD15?
Likely yes, this kit covers the 2007-2024 DD15 production run, but confirm against your engine serial number or the number stamped on your old gasket kit before ordering - Detroit made some running changes to fire ring and injector seal spec over that span.
Is FP-23520024 the same as the Detroit A4720162120?
It's an aftermarket manufacturer's number built to the same head gasket spec and cross-references to A4720162120, not a Detroit Diesel part number itself. Functionally it's built for the same application - confirm fit against your old part number if you're unsure.
Will this kit work on a DD16?
Yes, DD16 shares this head gasket architecture with the DD15, but always verify against your engine serial or old gasket box number since DD16 came in later with its own minor running changes.
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.