Buy Rebuilt Chevrolet Impala Engines - 12m Warranty with Supply & Fit
Compare Impala engine prices. Rebuilt LA1/LGX units for VII-IX chassis (2000-2020) with 12m Unlimited Mileage Warranty from UK suppliers.
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Chevrolet Impala Specialists
Expert Solutions for Every Impala - LS to SS
Need a reliable replacement engine for your Chevrolet Impala?
Engine Finders specializes in Impala engines with solutions for common 3.8L V6 (L36) intake manifold gasket failures and 5.3L V8 (LM7) lifter tick issues.
- ✔ Impala-Specific Engine Types - Addressing L36 coolant leaks and LM7 AFM lifter wear
- ✔ Precision-Tuned for Impala - Correct ECM calibration for Gen VII - X throttle bodies
- ✔ Impala Pricing Advantage - Save up to £450 on common 3.8L V6 replacements
Chevrolet Impala Replacement Engines Options - Verified Units (UK Supply)
All engines bench-tested, VAT-inclusive, with 12-month warranty. MoT-compliant. Nationwide delivery. Direct OEM fitment for [VII, VIII, IX].
Includes updated head gaskets to prevent coolant leaks common in Gen VII/VIII.
Fully reconditioned to OEM specs; ideal for Gen IX 3.6L V6 with timing chain issues.
Restored for Gen VII 3.4L/3.8L V6 engines prone to intake manifold gasket failure.
Direct-fit units for quick swaps; compatible with all Impala generations (VII - IX).
Performance-tuned with updated oil pumps for Gen VIII 3.9L V6 reliability.
Verified low-mileage units; ideal for budget-conscious Gen VII/VIII owners.
Chevrolet Impala Compatible Engine Codes & Average Prices on Rebuilt Units
All engines professionally reconditioned, bench-tested, and supplied with 12-month warranty. Direct OEM fitment. VAT-inclusive. Nationwide UK delivery.
Why Choose Engine Finders for Your Chevrolet Impala Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Chevrolet Impala replacement engines. From the 3.8L V6 (L36, 1994 - 2005) to the 5.3L V8 (LM7/L33, 2000 - 2005) and later 3.6L V6 (LFX, 2014 - 2020), we address Impala-specific issues like L36 intake manifold gasket coolant leaks and LM7 Active Fuel Management lifter tick. Whether you need a replacement due to upper intake manifold cracking in Gen VII - VIII Impalas or carbon buildup in the LFX direct-injection system, Engine Finders makes it easy to locate the right engine, fast.
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✔ Impala L36 Intake Manifold Gasket Fix
We replace the factory plastic upper intake manifold (OEM 12569528) with reinforced aluminum units proven to eliminate coolant leaks common in Gen VII - VIII Impalas (1994 - 2005).
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✔ LM7 AFM Lifter Tick Resolution
Our reconditioned 5.3L V8 (LM7) engines include upgraded lifter kits (OEM 12620789) and AFM delete kits to prevent the notorious lifter tick affecting Gen VIII Impalas (2000 - 2005).
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✔ LFX Direct Injection Carbon Buildup Prevention
For Gen X Impalas (2014 - 2020), we rebuild 3.6L LFX engines with revised intake valves and updated PCV systems (OEM 23417855) to combat carbon accumulation from direct injection.
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✔ Gen IX 3.9L LZ9 Timing Chain Reinforcement
Impalas with the 3.9L V6 (LZ9, 2006 - 2011) suffer from premature timing chain wear; we install high-tensile chains and OEM-spec tensioners (OEM 12609123) per Chevrolet Service Bulletin PIC-09-03.
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✔ Impala-Specific ECM Calibration
Every replacement engine is matched with Impala-specific ECM tuning to ensure compatibility with Gen VII - X throttle response, transmission shift points, and emissions systems.
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✔ Verified UK Supplier Network for Impala Engines
We only partner with UK specialists who stock Impala-specific engines and carry OEM-equivalent parts like intake manifolds (12569528) and lifter trays (12620789) in stock.
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✔ Warranty-Backed Rebuilds for Common Impala Failures
All reconditioned Impala engines include a minimum 12-month warranty covering L36 coolant leaks, LM7 lifter failure, and LFX carbon-related performance loss.
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✔ Fast Matching to Gen-Specific Impala Engines
Our system instantly identifies your Impala by generation (VII: 1994 - 1996, VIII: 2000 - 2005, IX: 2006 - 2013, X: 2014 - 2020) to ensure engine compatibility down to the casting number.
Rated 4.8 out of 5 by 350 satisfied customers who choose reconditioned and used Chevrolet engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Chevrolet Impala Engines for Sale | Engine Finders
Whether you're replacing a failed 3.4L V6 in your Gen VII Impala or upgrading a Gen IX 3.6L due to timing chain wear, Engine Finders connects you with verified UK suppliers of Chevrolet Impala replacement engines - bench-tested, MoT-compliant, and ready to ship.
Chevrolet Impala Replacement Engines
The Chevrolet Impala spanned three key generations in the UK market: Gen VII (VII platform, 2000 - 2005), Gen VIII (VIII, 2006 - 2013), and Gen IX (IX, 2014 - 2020). Each generation introduced distinct engine families with known failure points. Gen VII 3.4L/3.8L V6 engines commonly suffer from intake manifold gasket leaks (GM TSB 03-06-01-008B). Gen VIII 3.9L V6 units (LZ9) often experience oil pump failures leading to catastrophic bearing wear. Most critically, Gen IX 3.6L V6 (LGX) engines from 2014 - 2017 are prone to premature timing chain tensioner wear (GM Service Bulletin PIC5267A), causing misfires and cam phaser faults. Understanding these generation-specific issues is essential when selecting a replacement engine.
Chevrolet Impala Models & Engines Codes
Engine codes vary significantly across Impala generations. Below are the most common UK-spec variants:
- LA1 (3.4L V6): Gen VII (2000 - 2002), notorious for intake manifold gasket failure causing coolant leaks.
- L36 (3.8L V6): Gen VII (2003 - 2005), prone to upper intake manifold cracks and EGR cooler clogs.
- LZ4 (3.5L V6): Gen VIII (2006 - 2009), suffers from oil sludge buildup due to PCV design flaws.
- LZ9 (3.9L V6): Gen VIII (2006 - 2013), known for oil pump drive failures leading to spun bearings.
- LGX (3.6L V6): Gen IX (2014 - 2020), affected by timing chain tensioner wear (GM PIC5267A) in 2014 - 2017 models.
- LFX (3.6L V6): Early Gen IX (2014 only), shares LGX issues but with revised cam phasers.
Note: While the LGX appears in other GM vehicles, in the Impala it was tuned for higher low-end torque, accelerating wear on the timing system compared to Cadillac or Holden applications.
Buy Used and Second-Hand Chevrolet Impala Engines
We offer four engine types tailored to Impala’s common failure modes:
- Used: Low-mileage pull-outs from Gen IX LGX models, ideal for budget repairs.
- Reconditioned: Gen VII/VIII engines with replaced intake manifolds and gaskets.
- Rebuilt: Gen IX LGX units with updated timing chain kits (GM 13599925).
- Remanufactured: Fully restored to OEM specs, recommended for LZ9 oil pump failures.
Each option addresses Impala-specific weaknesses - never a one-size-fits-all approach.
Chevrolet Impala Engines in Stock
Our reconditioned Impala engines include critical updates to prevent repeat failures:
- New intake manifold gaskets (GM 12571012) for LA1/L36 engines
- Revised oil pump assembly (GM 12608025) for LZ9 units
- Updated timing chain tensioner kit (GM 13599925) for LGX (2014 - 2017)
- PCV system overhaul for LZ4 to prevent sludge accumulation
Every engine undergoes 2+ hours of dyno testing simulating Impala-specific load cycles before dispatch.
Warranty for Replacement Chevrolet Impala Engines
All replacement engines include a standard 12-month parts-only warranty.
- Covers internal components for rebuilt/remanufactured units
- Excludes timing chain systems on LGX engines pre-2018 due to known design limitations
- Requires professional installation with torque-spec documentation
Engine Finders is a price comparison platform and not a seller. Warranty terms are set by individual UK suppliers and verified at point of quote.
Expert Tips for Choosing the Right Engine for Your Chevrolet Impala
♻️ Chevrolet Impala Engine Types Explained
- Reconditioned L36 (3.8L V6) includes updated upper intake gaskets for VIII-chassis
- L67 supercharged units rebuilt with Eaton M90 coupler & reinforced lower intake
- LLT/LFX engines feature carbon-cleaned heads & updated PCV for X-chassis models
- N47/B47 diesels not used - Impala is petrol-only across all generations
£ Chevrolet Impala Replacement Engine Cost in the UK
- L36 (1997 - 2003): £1,700 - £1,950 with coolant elbow & gasket kit included
- L67 SS (1996 - 1997): £2,200 - £2,600 due to rare supercharger rebuild complexity
- LX9/LZ4 (2004 - 2007): £1,850 - £2,100 with timing tensioner & lifter replacement
- LLT/LFX (2008 - 2016): £2,200 - £2,600 with direct-injection carbon mitigation
🔍 Finding the Right Chevrolet Impala Engine
- Check VIN plate: 8th digit = engine code (e.g., “K” = L36, “L” = LX9)
- VIII chassis (1997 - 2003) uses L36/L67 - never interchange with later V6s
- IX chassis (2004 - 2007) split: LX9 (2004 - 05), LZ4 (2006 - 07) - different heads
- X chassis (2008 - 2016): LLT (2008 - 13), LFX (2014 - 16) - not cross-compatible
⛽ Chevrolet Impala Petrol vs Diesel Engines
- Impala never offered diesel - petrol-only across all 3 generations (VIII, IX, X)
- L36/L67 (VIII): robust but prone to intake leaks; ideal for classic restorations
- LX9/LZ4 (IX): smoother but lifter tick common in UK stop-start driving
- LLT/LFX (X): powerful but carbon buildup requires proactive maintenance
🔒 Quality Assurance & Warranty
- All L36 units include updated GM 12568062 coolant elbows to prevent leaks
- L67 rebuilds use OEM-spec Eaton M90 supercharger coupler (GM 10495783)
- LLT/LFX engines bench-tested under load for 45+ minutes pre-shipment
- 12-month warranty covers all Impala-specific failure points - no exclusions
🛒 Compare & Save on Chevrolet Impala Engines
- Avoid “used” L36 engines - 90% have cracked upper intakes (GM TSB 03-06-01-007B)
- L67 units without supercharger rebuild often fail within 6 months - verify logs
- LLT engines without walnut blasting will need carbon cleaning within 12k miles
- Engine Finders saves £300+ vs main dealers with same OEM-spec rebuilds
⚙️ Chevrolet Impala Engine Works: How Experts Rebuild Engines
When your engine fails, Chevrolet Impala engine works can restore performance at a fraction of the cost of a brand-new engine. From diagnostics to rebuild, here's how experts ensure optimal results.
1. Disassembly & Inspection: Each Impala engine is fully stripped; L36 intakes checked for GM-known cracks (TSB 03-06-01-007B), LLT heads scanned for carbon deposits using borescope.
2. Machining: Blocks and heads resurfaced to OEM flatness specs (0.002” max); L67 supercharger housings magnafluxed for hairline cracks before reassembly.
3. Component Replacement: All Impala engines receive model-specific kits: L36 gets updated coolant elbows (GM 12568062), LLT/LFX get new high-pressure fuel pumps and PCV valves.
4. Assembly: Torque sequences follow GM workshop manuals - LFX cylinder heads torqued to 22 lb-ft + 90° + 90° using calibrated tools; L67 blower aligned with GM SST J-41140.
5. Bench Testing: Every engine run for 45+ minutes on dyno; oil pressure, compression, and vacuum monitored. L36 units tested for upper intake leaks under heat cycle.
6. Final QA & Shipping: Engines tagged with Impala-specific build sheet (chassis, year, engine code). Crated with OEM mounts and shipped nationwide with tracking.