Two different cars share this page, and it is worth being clear which one you have. The 300M of 1999–2004 was a front-drive LH-platform car with a single engine, the 3.5L EGG V6. The 300 that replaced it in 2005 was a rear-drive LX car that shared its architecture with the Charger and the Magnum, and it had the full Chrysler engine range from the 2.7L to the 6.1L SRT HEMI. Nothing interchanges between the two.
Chrysler 300 & 300M Used Engines — engine options by generation
| Years |
Engine |
Family / VIN code |
Notes |
| 1999–2004 (300M, LH) |
3.5L V6 |
EGG — VIN G / K |
Front-drive, 253 hp on the Special |
| 2005–2010 (300, LX) |
2.7L V6 |
EER — VIN T / R |
Base engine, oil sludge risk |
| 2005–2010 (300, LX) |
3.5L V6 |
EGG — VIN V / G |
Touring and Limited, 250 hp |
| 2005–2010 (300, LX) |
5.7L HEMI |
VIN 2 / H |
Multi-Displacement System, 340 hp |
| 2005–2010 (300C SRT8) |
6.1L HEMI |
VIN W |
425 hp, no MDS |
| 2011–2014 (300, LD) |
3.6L V6 |
Pentastar — VIN G / D |
292 hp, replaced both earlier V6s |
| 2011–2014 (300, LD) |
5.7L HEMI |
VIN T |
363 hp with MDS |
| 2012–2014 (300 SRT8) |
6.4L HEMI |
VIN J |
470 hp |
| 2015–2023 (300, LD) |
3.6L V6 |
Pentastar — VIN G |
Revised heads and intake |
| 2015–2023 (300, LD) |
5.7L HEMI |
VIN T |
Carried over |
How to pick the right one
Say 300M or 300, then give us the 8th VIN digit. On the 300, 2011 is the hard line: the 2.7L and 3.5L were both replaced by the 3.6L Pentastar and none of the three interchange. On any HEMI, confirm whether the donor car ran the Multi-Displacement System, because the lifters, the camshaft and the oil control valve differ and the engine will not run correctly on the wrong calibration. All-wheel-drive 300s use a different oil pan and front accessory layout, so match the drive configuration.
What usually fails on these engines
The 2.7L EER is the one to avoid if you have a choice: a water pump driven off the timing chain inside the engine means that when it fails, coolant enters the oil, and the design was intolerant of extended oil change intervals, so sludged examples are common. On the 5.7L HEMI, MDS lifter collapse and the camshaft damage that follows is the dominant failure, usually announced by a tick that becomes a misfire. The 3.6L Pentastar had a left-bank cylinder head defect on 2011–2013 engines; we check the head casting number on every early one.
What ships with every unit
-
Compression and leak-down tested before it is listed, with the test sheet in the box.
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VIN matched fitment — send us your VIN and we confirm the engine code against your vehicle before the order ships.
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Written warranty on every engine, with labour coverage available.
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Free freight anywhere in the lower 48, shipped on a pallet to a commercial address or a terminal.
Related reading: Chrysler 5.7L HEMI engine guide, Chrysler 3.6L Pentastar engine guide, all engine guides.
Chrysler 300 & 300M used engines - frequently asked questions
Which engines did the Chrysler 300 & 300M use?
Across 1999 to 2023 the Chrysler 300 & 300M was built with 3.5L V6, 2.7L V6, 5.7L HEMI, 6.1L HEMI, 3.6L V6 and 6.4L HEMI. The table above lists which one belongs to each generation, with the engine family and VIN character that identifies it.
How do I know which engine is in my Chrysler 300 & 300M?
The eighth character of the VIN encodes the engine on almost every US vehicle, and that is the only reliable way to settle it - two cars of the same year and trim can carry different engines. Send us the VIN and we check the engine code against your vehicle before anything ships.
Will an engine from a different year fit my Chrysler 300 & 300M?
Say 300M or 300, then give us the 8th VIN digit. On the 300, 2011 is the hard line: the 2.7L and 3.5L were both replaced by the 3.6L Pentastar and none of the three interchange.
What usually fails on these engines?
The 2.7L EER is the one to avoid if you have a choice: a water pump driven off the timing chain inside the engine means that when it fails, coolant enters the oil, and the design was intolerant of extended oil change intervals, so sludged examples are common. On the 5.7L HEMI, MDS lifter collapse and the camshaft damage that follows is the dominant failure, usually announced by a tick that becomes a misfire.
What comes with a used Chrysler 300 & 300M engine?
Every engine is compression and leak-down tested before it is listed and the test sheet ships in the box. Fitment is VIN matched before the order goes out, every engine carries a written warranty with labour coverage available, and freight is free anywhere in the lower 48.
