Used Chevrolet Impala Engines
Used, remanufactured and rebuilt engines for the 1980–2020 Chevrolet Impala — tested before they ship and covered by warranty. Tell us your Impala and we’ll match the exact engine.
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Engine Options
Which engine does your Impala have?
Five generations of Impala fall in these years, and the first two are rear-wheel-drive cars. The 1980–1985 Impala was Chevrolet’s full-size car, sold with 3.8L and 4.3L V6s, 4.4L and 5.0L V8s, a 5.7L V8 for police cars and an Oldsmobile-built 5.7L diesel. The name returned for the 1994–1996 Impala SS, a Caprice-based sedan with the 5.7L LT1 V8. No Impala was sold for 1986–1993 or 1997–1999.
From 2000 the Impala is front-wheel drive. The 2000–2005 car had the 3.4L and 3.8L V6s and a supercharged 3.8L in the SS; the 2006–2013 car had the 3.5L and 3.9L V6s, a transverse 5.3L V8 in the SS and, from 2012, the 3.6L; and the 2014–2020 car had a 2.5L four, a 2.4L eAssist mild hybrid for 2014 only and the 3.6L. The 2006 design also stayed in production for fleets as the Impala Limited through 2016.
The table below lists what was offered when. Because the Impala Limited was sold alongside the new car for 2014–2016, and both have a 3.6L, we confirm from your VIN before we quote.
| Engine | Code | Notes |
|---|---|---|
| 3.8L V6 (229) | Code: LC3 | Chevrolet-built base engine in sedans and coupes, 1980–1984. |
| 3.8L V6 (231) | Code: LD5 | Buick-built; used in California cars for 1980. |
| 4.3L V6 (262) | Code: LB4 | Throttle-body injection. The base engine for 1985. |
| 4.4L V8 (267) | Code: L39 | 1980–1982. |
| 5.0L V8 (305) | Code: LG4 | Four-barrel carburetor, all years. |
| 5.7L V8 (350) | Code: LM1 | Police package only. |
| 5.7L diesel V8 (350) | Code: LF9 | Oldsmobile-built. Wagons from 1980 and the other body styles from 1981. |
| Engine | Code | Notes |
|---|---|---|
| 5.7L V8 | Code: LT1 | The only engine. A 260-hp version with cast-iron heads; OBD-II from 1996. |
| Engine | Code | Notes |
|---|---|---|
| 3.4L V6 | Code: LA1 | Base engine, all years. |
| 3.8L V6 Series II | Code: L36 | LS, all years. |
| 3.8L supercharged V6 | Code: L67 | SS, 2004–2005. |
| Engine | Code | Notes |
|---|---|---|
| 3.5L V6 | Code: LZ4 / LZE | 2006–2011. The LZE is the flex-fuel version. |
| 3.9L V6 | Code: LZ9 / LZ8 / LZG / LGD | 2006–2011, in retail and police cars. The 2007–2008 engines have Active Fuel Management. |
| 5.3L V8 | Code: LS4 | SS, 2006–2009. A transverse version built for GM’s front-drive cars. |
| 3.6L V6 | Code: LFX | The only engine for 2012–2013. |
| Engine | Code | Notes |
|---|---|---|
| 2.5L four-cylinder | Code: LKW | 2014–2019. |
| 2.4L eAssist mild hybrid | Code: LUK | 2014 only. |
| 3.6L V6 | Code: LFX | Tenth-generation car 2014–2020, and the only engine for 2020. Also the Impala Limited, 2014–2016. |
Not sure which one is yours? Request a quote and we’ll work it out from your VIN.
Before You Order
What to check before you order
Four different 3.8L V6s
The 1980–1984 cars have the Chevrolet 229 (LC3), except 1980 California cars, which have the Buick 231 (LD5); the 2000–2005 cars have the 3800 Series II (L36) or, in the 2004–2005 SS, the supercharged L67. They are different engines that share a size, so match the code, not just the displacement.
1994–1995 or 1996 Impala SS
The 1996 Impala SS is OBD-II, and its LT1 has a different engine computer and sensors from the 1994–1995 cars. Tell us the model year so the engine matches the car’s electronics.
Two Impalas in 2014–2016
The 2006 design was sold to fleets as the Impala Limited through 2016 while the new car went to the public. Both offer a 3.6L, but they are different cars. The VIN tells us which you have.
Which 3.9L and 3.5L
The 3.9L was built in several versions, and only the 2007–2008 engines have Active Fuel Management. The 3.5L comes as the LZ4 or the flex-fuel LZE. A replacement has to match what the car’s computer expects, so we match by model year and engine code.
eAssist is a mild hybrid
The 2.4L eAssist is a mild hybrid with its own electrical hardware, and it is not the same engine as the 2.5L. Tell us if your Impala is an eAssist.
Have your VIN ready
With the VIN we can confirm the engine code, model year and body before we quote, which avoids ordering the wrong version.
Common Problems
Common Impala engine problems
Head gasket and head-bolt failure — 5.7L diesel, 1980–1985
The Oldsmobile-built diesel is known for head bolts that stretch and head gaskets that fail, most often after the engine has overheated.
Optispark failure — LT1, 1994–1996
The LT1’s Optispark distributor sits behind the water pump at the front of the engine, and coolant from a leaking pump or moisture gets into it, causing misfires, stalling or a no-start. Check the Optispark and the water pump before condemning the engine.
Intake gasket and manifold failures — 3.4L and 3.8L, 2000–2005
The 3.4L’s lower intake-manifold gaskets and the composite upper intake on the non-supercharged 3.8L, near the EGR passage, break down and leak coolant. An engine that keeps losing coolant overheats, so check the gaskets and cooling system before condemning the engine.
Oil fires — 3.8L, 2000–2004
Oil leaking past the valve-cover gasket can drip onto the hot exhaust manifold and start an engine-compartment fire. GM recalled these cars more than once because the first repair did not always stop the leak. Have a dealer check your VIN for open recall work.
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FAQ
Impala engine questions, answered
Which engine does my Impala have?
By generation: a 3.8L or 4.3L V6, a 4.4L or 5.0L V8, the 5.7L diesel or, in police cars, the 5.7L gasoline V8 for 1980–1985; the 5.7L LT1 V8 in the 1994–1996 SS; a 3.4L or 3.8L for 2000–2005; a 3.5L, 3.9L or the SS’s 5.3L V8 for 2006–2011; the 3.6L for 2012–2016, including the fleet Impala Limited; and a 2.5L, the 2014-only 2.4L eAssist or the 3.6L for 2014–2020. On a 1981-or-later car the eighth character of the VIN identifies the engine, or send us the VIN and we will confirm.
Is the 1994–1996 Impala SS engine the same as a Corvette LT1?
No. The Impala SS uses the B-body version of the 5.7L LT1, with cast-iron heads and a 260-hp rating, while the Corvette and Camaro LT1s have aluminum heads. Match the B-body engine and the model year.
Is the 2006–2009 Impala SS’s 5.3L the same as a Silverado 5.3L?
No. The 2006–2009 SS uses the LS4, a transverse version of the 5.3L built for GM’s front-drive cars, and it is not the truck engine. Match the LS4 code.
My 3.8L Impala leaks oil onto the exhaust. Is that the recall?
GM recalled 2000–2004 Impalas with the 3.8L over valve-cover gasket leaks onto the exhaust manifold because of the fire risk. A leak there is a gasket repair, so have a dealer check whether the recall work was done before paying for an engine.
Is the engine covered by a warranty?
Yes. Every engine we sell is covered by warranty, and extended cover is available at extra cost. The full terms are in our Warranty Policy.
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