Warranty Answers

You can purchase the extended warranty still. You have until month 18 to purchase engine warranty and month 12 for chassis

 

Chassis covers only components of the chassis, so window regulator, axle gasket, chassis wiring, etc.

Cummins engine base engine warranty covers pretty much the entire engine, including the aftertreatment.

Aftertreatment warranty is on the cummins side. Once the base warranty expires, if you purchase extended warranty, you'll want to purchase two warranty plans. They have 3 total, but typically only 2 are purchased from Cummins. Protection Plan 1 which will cover your turbo, water pump, etc and Aftertreatment which will cover your NH3 sensor, nox sensor, egr cooler, etc.

 

There are many different plans. But you have to remember that Peterbilt and Cummins is completely separate.

For example, on the Peterbilt side, you can purchase Extended chassis coverage, which is just an extension of the base warranty. Or you can purchase extended HVAC coverage - which only extends the coverage of the HVAC coverage. Or you can purchase Towing, which provides tow coverage to chassis components. You could also purchase extended suspension warranty.

On the Cummins side, there are basically three major warranty plans : PP1 (Protection Plan 1), PP2, and Aftertreatment.

PP1 and Aftertreatment is often purchased together, mostly because in order to purchase Aftertreatment, you have to purchase PP1.

PP1 on a EPA 2013 will cover your oil pan, EGR cooler, crankshaft, fuel pump, water pump, fuel injectors, ecm, cylinder block, liners, sensors, air compressor, turbo, rocks, plus more

PP2 on a EPA 2013 will only cover your camshaft, cylinder block, egr cooler, oil pump, rockers, fuel pump drive gear (not the pump itself), ecm, cylinder head, oil pan, water pump drive gear, and more.

PP1 covers more than PP2.

Aftertreatment covers your Nox sensors, NH3 sensor, DPF sensors, HC doser, SCR, DPF, DOC, etc. And in order to purchase Aftertreatment, you have to purchase PP1.

So you can purchase PP1, PP2 and Aftertreatment, but in order to purchase Aftertreatment, PP1 is required.

Cummins does have more warranties other than those 3, but to be truthful, they're not seen very often. Also, some of the warranty options depends on the engine model (ISX, ISL, etc).

On the other side, Paccar MX has very similar options. So similar in fact that in order to purchase Aftertreatment, you used to have to purchase their version of PP1, however that's no longer the case. You can now purchase Aftertreatment for the MX by itself, but a slightly higher cost than if you purchased it along with the Comprehensive coverage.