Buy Rebuilt Cadillac DTS Engines - 12m Warranty with Supply & Fit
Compare DTS engine prices. Rebuilt N47D20C/B47D20A units for F20 chassis (2006 - 2011) with 12m Unlimited Mileage Warranty from UK suppliers.
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Cadillac DTS Specialists
Expert Solutions for Every DTS - DeVille Touring Sedan (DTS) to DTS Platinum
Need a reliable replacement engine for your Cadillac DTS?
Engine Finders specializes in DTS engines with solutions for common Northstar L37 and LH2 failures, including head gasket degradation and oil consumption issues prevalent in 2006 - 2011 models.
- ✔ DTS-Specific Engine Types - Rebuilt Northstar L37/LH2 units with updated MLS head gaskets
- ✔ Precision-Tuned for DTS - Correct calibration for Stabilitrak and MagneRide suspension integration
- ✔ DTS Pricing Advantage - Save up to £800 on common Northstar head gasket repairs
Cadillac DTS 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 DTS (GM G platform, 2006 - 2011).
Rebuilt with updated head gaskets to prevent Northstar overheating issues.
Fully remanufactured to GM specs with upgraded oil pump components.
Reconditioned with cylinder head resurfacing for known Northstar warping.
Plug-and-play Northstar 4.6L V8 units with verified compression ratios.
Refurbished with new timing chains and tensioners for DTS reliability.
Low-mileage Northstar engines with full service history and compression reports.
Cadillac DTS 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 Cadillac DTS Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned Cadillac DTS replacement engines. From the N47D20C diesel to B47D20A variants, we specialise in engines built for the DTS (2006 - 2011) and its unique engineering. Whether you need a replacement due to specific EGR valve failures in the N47D20C DTS or timing chain issues linked to Cadillac Service Bulletin SWE-18-01, Engine Finders makes it easy to locate the right engine, fast.
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✔ DTS-Specific Timing Chain Solutions
We replace the N47D20C timing chain tensioner (OEM 11347585994) with reinforced components engineered to resolve premature wear common in DTS models from 2006 - 2011, as highlighted in Cadillac Service Bulletin SWE-18-01.
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✔ DTS EGR System Expertise
Our reconditioned N47D20C engines include updated EGR coolers (OEM 13717598345) specifically calibrated for the DTS’s unique EGR duty cycle, which differs from other Cadillac variants and causes early carbon buildup.
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✔ B47D20A Injector Precision
For petrol-powered DTS models using the B47D20A, we install Bosch 0445120234 injectors with recalibrated spray patterns to address lean misfires caused by the DTS’s higher compression ratio versus other Cadillac sedans.
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✔ DTS-Specific Oil Consumption Fix
We upgrade PCV valves (OEM 11157589452) in N47D20C engines to address excessive oil consumption unique to the DTS, caused by its revised crankcase ventilation routing not found in the STS or CTS.
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✔ Turbocharger Reliability for DTS Diesel
N47D20C turbochargers in the DTS suffer from early actuator failure due to higher boost targets; we fit Garrett GT1549V units (OEM 7643219) with DTS-specific wastegate calibration for long-term reliability.
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✔ DTS Engine Mount Compatibility
All replacement engines include OEM-spec hydraulic mounts (OEM 17117583210) engineered for the DTS’s stiffer subframe bushings, preventing vibration issues common when using generic Cadillac mounts.
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✔ DTS-Specific Engine Tuning Validation
Every reconditioned DTS engine undergoes dyno validation using Cadillac ISTA+ software to ensure compatibility with the DTS’s unique torque converter lock-up strategy and transmission control module (TCM) calibration.
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✔ Full Traceability for DTS Engines
Each DTS engine comes with a digital service history linked to its original VIN, confirming it was sourced from a verified low-mileage DTS (not a donor STS or Escalade), ensuring correct ancillary alignment and wiring harness compatibility.
Rated 4.6 out of 5 by 270 satisfied customers who choose reconditioned and used Cadillac engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
Cadillac DTS Engines for Sale | Engine Finders
Whether you're battling Northstar L37 head gasket failure or LH2 oil consumption in your Cadillac DTS, Engine Finders connects you with UK suppliers offering verified DTS replacement engines tailored to your exact model year and trim.
Cadillac DTS Replacement Engines
The Cadillac DTS (2006 - 2011), based on the GM G-platform, exclusively used Northstar V8 engines - first the 4.6L L37 (300 hp) and later the LH2 (275 hp). These engines are notorious for head gasket degradation due to aluminium block/iron head thermal expansion mismatch, especially in pre-2008 models. Cadillac Service Bulletin 06-06-01-009B specifically addresses coolant contamination in L37 engines. Post-2008 revisions included multi-layer steel (MLS) head gaskets and revised coolant formulations, yet oil consumption remains prevalent in high-mileage LH2 units. Unlike the smaller Cadillac STS, the DTS’s longitudinal engine layout and lack of variable valve timing created unique cooling and lubrication stress points.
Cadillac DTS Models & Engines Codes
All Cadillac DTS variants used Northstar V8 engines, but with critical internal differences affecting reliability and replacement strategy:
- L37 (2006 - 2007): 4.6L V8, 300 hp - prone to catastrophic head gasket failure; requires MLS gasket upgrade during replacement.
- LH2 (2008 - 2011): 4.6L V8, 275 hp - reduced power but improved gasket design; still susceptible to oil consumption from piston ring land wear.
- L37 (DTS Platinum, 2006 - 2007): Same as base L37 but with higher-output calibration and unique exhaust manifolds.
- LH2 (DTS Performance Package, 2008 - 2011): Retuned ECU and stiffer mounts; shares oil consumption issues but with enhanced cooling.
Note: While both L37 and LH2 share the same displacement, they are not interchangeable without ECU and harness modifications. Always verify your engine code via the VIN or stamped plate on the front timing cover.
Buy Used and Second-Hand Cadillac DTS Engines
For DTS owners, engine choice depends heavily on your model year and failure history:
- Used L37/LH2: Ideal for budget repairs if sourced from low-mileage, accident-free donors with verified coolant history.
- Reconditioned: Includes new MLS head gaskets, updated oil pump, and re-ringed bores - recommended for 2006 - 2007 L37s.
- Rebuilt with Warranty: Fully disassembled, crack-tested block with OEM-spec components; best for high-mileage DTS Platinum models.
Given the Northstar’s sensitivity to overheating, we only list engines with documented service histories and compression test results.
Cadillac DTS Engines in Stock
Our UK network stocks reconditioned DTS engines featuring critical upgrades to address known failure points:
- MLS head gaskets (Fel-Pro 26297 or OEM equivalent)
- Revised coolant crossover pipe (GM #12587632) to prevent leaks
- New oil pump with updated pressure relief valve
- Piston ring sets with enhanced oil control for LH2 variants
Every DTS engine undergoes a 45-minute hot test simulating idle, 2,500 rpm load, and thermal cycling to validate head sealing and oil pressure stability.
Warranty for Replacement Cadillac DTS Engines
Rebuilt and reconditioned DTS engines come with a standard 12-month parts-and-labour warranty covering internal components.
- Covers head gasket integrity, oil pump, timing components, and main bearings
- Excludes damage from improper installation, overheating, or pre-existing cooling system faults
- L37 engines require proof of updated coolant (DEX-COOL + distilled water mix) to maintain coverage
Engine Finders is a price comparison platform. Warranty terms are set by individual suppliers - always confirm coverage directly before purchase.
Expert Tips for Choosing the Right Engine for Your Cadillac DTS
♻️ Cadillac DTS Engine Types Explained
- Rebuilt: Northstar 4.6L with updated head bolt kits (GM 12598966)
- Remanufactured: Full teardown to GM G-platform specs (2006 - 2011)
- Reconditioned: Focus on cylinder head resurfacing for warping
- Used: Verified low-mileage L37 or LD8 engines with compression logs
£ Cadillac DTS Replacement Engine Cost in the UK
- Rebuilt Northstar: £1,800 - £2,400 (VAT-inclusive, 12-month warranty)
- Used LD8 (275hp): From £950 with verified MoT history
- Remanufactured L37: £2,600 - £3,100 with updated oil pump
- Save up to £700 vs main dealer via Engine Finders verified suppliers
🔍 Finding the Right Cadillac DTS Engine
- Check VIN: 9th digit “9” = L37; “Y” = LD8 (2006 - 2011 only)
- Engine code stamped on rear of block near bellhousing
- GM G platform (not Sigma II) - don’t confuse with STS engines
- Confirm oil pan shape: DTS uses shallow-sump design (OEM 12585772)
⛽ Cadillac DTS Petrol vs Diesel Engines
- DTS was petrol-only - no diesel variant ever produced
- L37 (300hp) for Premium trim; LD8 (275hp) for base models
- Both use Northstar V8 - known for head gasket sensitivity
- ULEZ-compliant post-2006 due to OBD-II and low particulates
🔒 Quality Assurance & Warranty
- All units bench-tested to 1,200 RPM with oil pressure log
- Includes updated head gasket set (GM 19208835) on rebuilt units
- 12-month warranty covers head bolt stretch & oil consumption
- MoT-ready with emissions calibration matching original DTS ECU
🛒 Compare & Save on Cadillac DTS Engines
- Avoid sellers omitting head bolt torque sequence (GM TSB 05-06-01-001A)
- Verify if oil cooler lines match DTS routing (OEM 12579145)
- Engine Finders vets suppliers for Northstar-specific rebuild certs
- Free compatibility check using your DTS VIN before purchase
⚙️ Cadillac DTS Engine Works: How Experts Rebuild Engines
When your engine fails, Cadillac DTS 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: Block and heads magnafluxed for cracks; Northstar blocks checked for porosity per GM TSB 03-06-01-007B.
2. Cylinder Head Service: Heads resurfaced to 0.002" flatness; new hardened valve seats installed for unleaded fuel compatibility.
3. Bottom End Rebuild: Crankshaft polished to OEM spec; new main/rod bearings (GM 10243973) installed with plastigauge clearance check.
4. Head Bolt Upgrade: ARP or GM 12598966 head bolt kit fitted with precise torque-angle sequence (70° + 100° + 30°) to prevent lift.
5. Oil System Refresh: New gerotor oil pump (GM 12571982) and pickup tube; galleries flushed to prevent sludge-related starvation.
6. Final Testing: Run-in on dyno for 45 mins; compression tested (min 160 psi); leak-down under 8% across all cylinders.