CT4 2.0L Petrol Engines
from £7,200 to £9,800
Rebuilt units from £7,200 · Common codes: LSY, LSYH, LSYK
Cadillac ENGINE MARKETPLACE
Cadillac CT4 Engine Replacement - Compare Quotes from UK Specialists
Get quotes from trusted UK Cadillac CT4 engine specialists. Compare reconditioned and rebuilt prices for L3B and LF4 - 2.7L turbo I4 to 3.6L twin-turbo V6 covered. Get specialist quotes for your CT4.
Supply & Fit Available
12-Month Warranty
Nationwide Delivery
100+ Suppliers
CT4 2.7L Performance Engines
from £9,400 to £13,000
Rebuilt units from £9,400 · Common codes: L3B, L3BH, L3BK
CT4 Blackwing 3.6L Engines
from £14,800 to £19,000
Rebuilt units from £14,800 · Common codes: LGY, LGYH
Instant engine replacement quote - 100% free, no obligation
Engine replacement near me - UK-wide specialist network
Compare reconditioned, rebuilt & used engine prices
Supply & fit available - parts and labour from vetted specialistsInstant engine replacement quote - 100% free, no obligationEngine replacement near me - UK-wide specialist networkCompare reconditioned, rebuilt & used engine pricesSupply & fit available - parts and labour from vetted specialistsHow It Works
3 Simple Steps3 Simple Stepsto Finding the Best Cadillac CT4 Replacement Engineto Finding the Best Cadillac CT4 Replacement Engine
12-Month Warranty
Supply & Fit Available
Nationwide Delivery
Trusted UK Suppliers
Most replacements completed within 3-5 days.
Live UK Engine Market Data
Average Market Prices
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↻ Last updated: 4 Aug 26, 9:26
Customer Reviews
Trusted by Cadillac CT4 Owners Across the UK
Rated 4.8 out of 5 by 1,081 verified customers who sourced reconditioned and used Cadillac CT4 engines through EngineMarket.
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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“Got three quotes within an hour and chose the best deal easily. The whole process was quick, clear and stress-free.”
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“I wasn't sure what I needed, but they helped me identify the right engine and connected me with a trusted garage.”
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“Thanks to EngineMarket, I saved over £1,200 on my engine replacement and got matched with a great local specialist within the hour.”
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Variants We Cover
Cadillac CT4 Engine ReplacementAll Variants Covered
Cadillac CT4 Luxury
LSY 2.0L Petrol
Rebuilt Engines: £7,200-£9,800
Cadillac CT4 Premium Luxury
LSY/L3B 2.7L Petrol
Rebuilt Engines: £7,200-£13,000
Cadillac CT4 Sport
L3B 2.7L Petrol
Rebuilt Engines: £9,400-£13,000
Cadillac CT4-V
L3B 2.7L High
Rebuilt Engines: £9,400-£13,000
Cadillac CT4-V Blackwing
LGY 3.6L Twin
Rebuilt Engines: £14,800-£19,000
Cadillac CT4 US Import
LSY/L3B/LGY Petrol
Rebuilt Engines: £7,200-£19,000
Not sure which variant your Cadillac CT4 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.
CT4
Engine Codes
Cadillac CT4 Engine CodesFull Technical Specifications & Replacement Guide
Every engine code fitted to the Cadillac CT4 across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.
Petrol Engines
Extracted from detailed petrol and performance engine families across Cadillac CT4 variants.
LSY - 2.0L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
LuxuryPremium LuxurySport (early production)
Avg. rebuilt price
£7,200 - £9,800
Supply only
Technical specifications
- Fuel type
- Petrol
- Engine size
- 2.0L
- Power output
- 237 hp
- Years fitted
- 2020-2024
Common failures
- ●Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
- ●Confirm exact engine code and fitment before ordering.
- ●Ask for warranty and supply & fit terms.
Not sure which engine code?
Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Cadillac CT4 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.
CT4
Common Problems
Cadillac CT4 Engine Problems - What It Costs to Fix & When Replacement Makes Sense
The Cadillac CT4's petrol engine range is generally robust but has documented failure points on higher-mileage or performance-driven examples. The LSY 2.0L, L3B 2.7L twin-turbo and LGY 3.6L Blackwing each have specific weak points that drive replacement enquiries. Every rebuilt engine supplied through EngineMarket includes upgraded internal components...
L3B Twin-Turbo Coolant Pipe Failure - Why Cadillac CT4 Sport/V Engines Overheat
L3B Twin-Turbo Coolant Pipe Failure
Most affected vehicles
Cadillac CT4 SportCT4-V
Cadillac CT4 Sport, CT4-V, Premium Luxury 2.7L (2021-2024, L3B)
Failure mileage range
40,000-60,000 miles
Typical failure window
Root cause
Factory plastic turbo coolant pipes become brittle under heat cycling and crack, causing rapid coolant loss and catastrophic overheating under performance driving.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Pipe Replacement Only | £800 - £1,400 | £450 - £850 | Replace cracked plastic coolant pipes with OEM parts; system flush and refill. | Temporary fix only; other plastic pipes likely to fail soon after. |
| Intermediate - Cooling System Overhaul | £1,800 - £3,200 | £1,100 - £2,100 | Replace all plastic coolant pipes with upgraded aluminium units; thermostat, water pump inspection. | Viable if caught before overheating damage; prevents recurrence. |
| Full Replacement - Rebuilt L3B Engine | £12,000 - £18,000 | £9,400 - £13,000 | Supply & fit rebuilt L3B with aluminium coolant pipe upgrade, bench-tested, 12-month warranty. | Only option if overheating caused cylinder/head damage; permanent solution. |
Our recommendation
If your CT4 shows early coolant loss but no overheating warning, the aluminium pipe upgrade is cost-effective prevention. If the temperature gauge spiked or the engine seized, replacement is the only reliable path - a rebuilt L3B with upgraded pipes costs less than dealer repairs on a damaged block.
Compare rebuilt L3B engine prices for your Cadillac CT4Replacement Engine Options
Cadillac CT4 Engine TypesOptions, Costs & What to Expect
Every Cadillac CT4 engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Cadillac CT4 Reconditioned Engines (Recon)£7,200 - £14,800((supply only))
Cadillac CT4 Rebuilt Engines£7,200 - £19,000((supply only))
Cadillac CT4 Used Engines£4,500 - £11,000((supply only))
Cadillac CT4 Remanufactured Engines£9,800 - £19,000((supply only))
Cadillac CT4 Refurbished Engines£6,200 - £13,000((supply only))
Compare Cadillac CT4 engine prices with vetted UK suppliers
All engine types include a minimum 12-month unlimited mileage warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Cadillac CT4 within hours.
Engine Sizes
Cadillac CT4 Engines by SizeFind the Right Displacement for Your Variant
Every displacement fitted to the Cadillac CT4 in the UK is listed below, with compatible engine codes, production years and common failure notes to help you identify the right replacement.
The 2.0L LSY turbo four was the launch engine for the CT4, powering entry Luxury and Premium Luxury variants with efficient single-turbo performance and direct injection technology.
⚙
Engine Code(s)
LSY, LSYH, LSYK
▣
Compatible Models (UK)
Luxury (2020-2024), Premium Luxury (2020-2024), Sport early production
ϟ
Power output
Verified by registration
△
Common Failure Points
Timing chain tensioner wear per GM TSB PI2021-003; HPFP failure after 65k miles
Production Years: 2020-2021
Get quotes for Cadillac CT4 2.0L petrol enginesFuel Type
Cadillac CT4 Engines by Fuel Type
Choose your Cadillac CT4 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from the efficient 2.0L Luxury to the 472hp Blackwing.
Cadillac CT4 Petrol Engines
PetrolAll Cadillac CT4 variants sold in the UK use petrol engines only, with turbocharged four-cylinder and twin-turbo V6 options covering entry to flagship performance.
Common Cadillac CT4 Petrol Engine Families
- •LSY - 2.0L turbo four (Luxury/Premium Luxury), timing chain tensioner concerns per GM TSB
- •L3B - 2.7L twin-turbo four (Sport/V-Series), plastic coolant pipe failure pattern at 40-60k miles
- •LGY - 3.6L twin-turbo V6 (Blackwing), turbo oil seal wear under track use
Found In
- •First Generation (2020-2024) - LSY, L3B, LGY
Known For
- •No diesel or hybrid options offered in UK market
- •L3B twin-turbo dominates replacement enquiries due to performance usage patterns
- •US-spec imports require DVLA documentation and GM SPS2 coding support
Typical Petrol Models
- •CT4 Luxury 2.0L
- •CT4 Premium Luxury 2.0L/2.7L
- •CT4 Sport 2.7L
Cadillac CT4 Petrol Engines
PetrolAll Cadillac CT4 variants sold in the UK use petrol engines only, with turbocharged four-cylinder and twin-turbo V6 options covering entry to flagship performance.
Common Cadillac CT4 Petrol Engine Families
- •LSY - 2.0L turbo four (Luxury/Premium Luxury), timing chain tensioner concerns per GM TSB
- •L3B - 2.7L twin-turbo four (Sport/V-Series), plastic coolant pipe failure pattern at 40-60k miles
- •LGY - 3.6L twin-turbo V6 (Blackwing), turbo oil seal wear under track use
Found In
- •First Generation (2020-2024) - LSY, L3B, LGY
Known For
- •No diesel or hybrid options offered in UK market
- •L3B twin-turbo dominates replacement enquiries due to performance usage patterns
- •US-spec imports require DVLA documentation and GM SPS2 coding support
Typical Petrol Models
- •CT4 Luxury 2.0L
- •CT4 Premium Luxury 2.0L/2.7L
- •CT4 Sport 2.7L
Not sure which fuel type your Cadillac CT4 has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Cadillac CT4 specialists.
Engine YearsGet quotes for 2020 Cadillac CT4 replacement engines →
Cadillac CT4 Engines by YearWhat Was Fitted & WhenCadillac CT4 Engines by Year - What Was Fitted & When
This section covers all major engine changes across the Cadillac CT4's UK production timeline, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
- ✓Cadillac CT4 introduced to UK market as US-spec grey import
- ✓Only 2.0L LSY turbo petrol engine available across Luxury and Premium Luxury trims
- ✓Right-hand drive conversions began for UK compliance
▣Main Engines
LSY- 2.0L petrol turbo (Luxury / Premium Luxury)
▰Popular Models
- •Cadillac CT4 Luxury
- •Cadillac CT4 Premium Luxury
🔧Known For
- ✓Early production LSY units subject to GM TSB PI2021-003 for timing chain tensioners
- ✓Strong demand for US-import verification and DVLA compliance documentation
- ✓Entry-level pricing makes LSY the highest-volume replacement enquiry
Engine Codes Covered:
LSYLSYHLSYKNot sure which year your Cadillac CT4 was built- Enter your registration number and we'll identify the exact engine, model year, and compatible replacement options instantly - all backed by a minimum 12-month warranty from UK Cadillac CT4 specialists.
FAQ