SRX 3.6L V6 Petrol Engines
from £2,800 to £4,200
Rebuilt units from £2,800 · Common codes: LFX, LY7, LF1
Get quotes from trusted UK Cadillac SRX engine specialists. Compare reconditioned and rebuilt prices for LY7, LH2, and LTG - 3.6L V6 to 4.6L Northstar V8 covered. Get specialist quotes for your SRX.
SRX 3.6L V6 Petrol Engines
from £2,800 to £4,200
Rebuilt units from £2,800 · Common codes: LFX, LY7, LF1
SRX Early Generation 3.6L Engines
from £2,600 to £3,800
Rebuilt units from £2,600 · Common codes: LY7, LF1
SRX 4.6L Northstar V8 Engines
from £3,500 to £6,200
Rebuilt units from £3,500 · Common codes: LH2

Most replacements completed within 3-5 days.


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Not sure which variant your Cadillac SRX is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Every engine code fitted to the Cadillac SRX 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.
Extracted from detailed petrol and performance engine families across Cadillac SRX variants.

LY7 - 3.6L Petrol
Main replacement demand comes from timing-chain, cooling-system and performance thermal-management faults.
Compatible variants
Avg. rebuilt price
£2,600 - £3,800
Supply only
Technical specifications
Common failures
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 SRX engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

The Cadillac SRX's GM High Feature V6 engines dominate UK replacement enquiries, particularly timing chain and oil consumption issues on LY7 and LFX units. Every rebuilt engine supplied through EngineMarket includes upgraded internal components designed to address the original failure point - plus a minimum 12-month unlimited mileage warranty. Use the cost...
Cadillac SRX Timing Chain Tensioner Failure
Most affected vehicles
Cadillac SRX Base, Luxury, Premium (2004-2009, LY7); SRX Luxury/Premium/Performance Collection (2010-2016, LFX)
Failure mileage range
60,000-100,000 miles
Typical failure window
Root cause
Plastic timing chain tensioners and guides deteriorate with heat and age, allowing chain slack that causes rattling, timing variation, and potential valve interference if ignored.
Repair options & estimated costs (UK ranges)
| Repair tier | Dealer price | Specialist price | What it involves | Longevity / suitability |
|---|---|---|---|---|
| Minor - Preventative Tensioner Replacement | £1,800 - £2,600 | £1,200 - £1,800 | Replace tensioners and guides only; chain retained if within wear limits | Viable only if caught early before chain stretch; 30k-50k mile extension |
| Intermediate - Full Timing Chain Kit | £3,200 - £4,500 | £2,200 - £3,200 | Replace chain, tensioners, guides, phasers; engine partially stripped | Addresses root cause; suitable if block/head undamaged; 60k+ mile expectation |
| Full Replacement - Rebuilt / Reconditioned Engine | £5,500 - £7,800 | £2,800 - £4,200 | Supply & fit rebuilt engine with upgraded timing components, bench tested, 12-month warranty | Best value when damage has occurred; eliminates recurrence risk; like-new reliability |
Our recommendation
If your SRX shows early cold-start rattle but no performance loss, a preventative tensioner/guide replacement at a specialist can extend life cost-effectively. However, once chain stretch has caused timing errors or damage, replacement with a rebuilt unit featuring upgraded components is the only reliable long-term solution.
Compare rebuilt LFX/LY7 engine prices for your Cadillac SRX
Every Cadillac SRX engine type is available through our UK network with typical price ranges based on variant, engine code and budget.
Compare Cadillac SRX 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 SRX within hours.

Every displacement fitted to the Cadillac SRX is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.
The 3.0L High Feature V6 (LF1) was a rare fitment in UK-imported SRX models, primarily appearing in early Gen 2 base trims before the 3.6L became standard. It offered adequate power but limited UK availability means replacement units require careful sourcing.
Engine Code(s)
LF1
Compatible Models (UK)
Base trim imports
Power output
Verified by registration
Common Failure Points
Timing chain component wear similar to LFX; lower UK prevalence means fewer documented failure patterns
Production Years: approx. 2010-2012
Compare Cadillac SRX 3.0L petrol engine prices
Choose your Cadillac SRX engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early LY7 255hp units to the latest LFX 308hp variants.
All UK-market Cadillac SRX models were petrol-powered, with the 3.6L High Feature V6 dominating replacement enquiries across both generations.
Common Cadillac SRX Petrol Engine Families
Found In
Known For
Typical Petrol Models
All UK-market Cadillac SRX models were petrol-powered, with the 3.6L High Feature V6 dominating replacement enquiries across both generations.
Common Cadillac SRX Petrol Engine Families
Found In
Known For
Typical Petrol Models
Not sure which fuel type your Cadillac SRX 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 SRX specialists.

This section covers all major engine changes across the Cadillac SRX production timeline (2004-2016), organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.
⚙Key Changes
▣Main Engines
LY7- 3.6L petrol (Base / Luxury / Premium)
LH2- 4.6L petrol (V8 / V8 AWD)
▰Popular Models
🔧Known For
Engine Codes Covered:
LY7LH2