$1,795.00
MAC21 All-Aluminum Radiator for Mack TerraPro MRU Series (2007–2016)
The MAC21 is an all-aluminum replacement radiator for Mack TerraPro MRU Series trucks (2007–2016). It has a 38-3/4″ x 27-1/2″ x 2-1/16″ core, a 2-5/16″ inlet, a 2-1/2″ outlet, a 6″ diameter PTO opening and no oil cooler. King Radiator HD supplies it from Mississauga, Ontario, to fleets and owner-operators across Canada.
MAC21 Specifications
| Spec | Detail |
|---|---|
| Part number | MAC21 |
| Fits | Mack TerraPro MRU Series (2007–2016) |
| Construction | All aluminum |
| Core size | 38-3/4″ x 27-1/2″ x 2-1/16″ |
| Inlet / Outlet | 2-5/16″ / 2-1/2″ |
| PTO opening | 6″ diameter |
| Oil cooler | None |
| Reference numbers | 1003694, 1003694BS, 1003694C, 1003694CS, 1102511, 1102511BS, 21098669, 3MF5582M2 |
Check the Oil Cooler and PTO Setup Before You Order
The MAC21 has a 6″ PTO opening and no oil cooler. If your truck has both an oil cooler and a PTO, the spec sheet points to the MAC2F instead. Compare your old radiator before ordering. Send us your truck’s year and model and we’ll confirm the match. Looking at other Mack models? See the MAC15 for MR600 Series trucks and the MAC19 for CHU, GU, VAH and VHD trucks.
Built for Heavy Mack Workloads
Mack TerraPro trucks work in stop-and-go vocational service, often with a PTO running, which keeps heat on the cooling system. A weak radiator is a common cause of overheating. Our guide to common heavy-duty truck radiator problems and fixes covers the warning signs to watch for.
Replace or Repair Your Mack Radiator?
If the damage is limited to a tank or part of the core, repair may cost less than a new unit. See our repair vs. replacement cost guide, or ask about our heavy-duty truck radiator repair and rebuilding and radiator re-coring services. If the radiator is beyond repair, the MAC21 is ready to order.
Running trucks through Canadian winters? Read our cooling system winterizing tips for heavy-duty fleets before the cold hits.
Order or Request a Quote
Add the MAC21 to your cart, or request a fleet quote for multiple units. Call 888-603-1655 or 905-795-9009.
What trucks does the MAC21 radiator fit?
The MAC21 fits Mack TerraPro MRU Series trucks (2007–2016), according to the King Radiator spec sheet.
Is the MAC21 an aluminum radiator?
Yes. The MAC21 is all-aluminum construction.
What are the MAC21 core dimensions?
The core measures 38-3/4″ x 27-1/2″ x 2-1/16″.
What are the MAC21 inlet and outlet sizes?
The inlet is 2-5/16″ and the outlet is 2-1/2″.
Does the MAC21 have an oil cooler or PTO opening?
The MAC21 has no oil cooler. It has a 6″ diameter PTO opening. For trucks with both an oil cooler and a PTO, the spec sheet lists the MAC2F.
What are the MAC21 reference numbers?
1003694, 1003694BS, 1003694C, 1003694CS, 1102511, 1102511BS, 21098669 and 3MF5582M2.
Can I repair my Mack radiator instead of replacing it?
Sometimes. Localized tank or core leaks can often be repaired or re-cored, which can cost less than a new unit. King Radiator HD can inspect and pressure-test your radiator to confirm.
