Buy Rebuilt MG ZR/ZS/ZT Engines - 12m Warranty with Supply & Fit
Compare MG ZR/ZS/ZT engine prices. Rebuilt K18M/L18X units for R30/R32/X30 chassis with 12m Unlimited Mileage Warranty from UK suppliers.
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MG ZR/ZS/ZT Specialists
Expert Solutions for Every MG ZR/ZS/ZT - 1.4i to ZT 260
Need a reliable replacement engine for your MG ZR/ZS/ZT?
Engine Finders specializes in MG ZR/ZS/ZT engines with solutions for common K-Series head gasket failures and Rover V6 timing issues.
- ✔ MG ZR/ZS/ZT-Specific Engine Types - K-Series 1.4i/1.8i & Rover KV6 2.5L
- ✔ Precision-Tuned for MG ZR/ZS/ZT - Updated MLS head gaskets for K-Series reliability
- ✔ MG ZR/ZS/ZT Pricing Advantage - Save up to £450 on common K-Series rebuilds
MG ZR/ZS/ZT 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 R30, R32, X30, X32.
Rebuilt with OEM-spec parts; addresses ZR/ZS head gasket issues.
Fully disassembled, machined, and rebuilt to factory tolerances.
Restored to reliable running condition; ideal for ZT V6 variants.
Plug-and-play units for R30/X30 chassis; minimal downtime.
Performance-tuned with updated gaskets for ZR 105/120 models.
Low-mileage pull-outs from MoT’d ZS/ZT estates; full history.
MG ZR/ZS/ZT 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 MG ZR/ZS/ZT Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned MG ZR/ZS/ZT replacement engines. From the K-Series 1.8i (engine code 18K4F) to the Rover KV6 2.5L (engine code 25K4F), we address the ZR/ZS/ZT’s notorious head gasket failures and V6 timing chain wear. Whether you need a replacement due to MLS gasket degradation in the 18K4F or oil pump sprocket failure in the 25K4F, Engine Finders makes it easy to locate the right engine, fast.
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✔ MG ZR/ZS/ZT K-Series Head Gasket Fix: MLS Upgrades for 18K4F
We rebuild all K-Series 1.8i (18K4F) engines with multi-layer steel (MLS) head gaskets (OEM GUG702750GM) to resolve the chronic failure caused by thermal cycling in ZR/ZS/ZT models (2001-2005), per MG Service Bulletin TSB-02-ENG-07.
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✔ KV6 Timing Chain System Overhaul for 25K4F
Our ZT 260 and ZS 180 KV6 (25K4F) replacements include upgraded timing chain tensioners (OEM YEB100220) and duplex chains to eliminate premature wear documented in MG Technical Bulletin KV6-04-12 affecting 2002-2005 models.
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✔ ZR 1.4i (14K4F) Block Integrity Restoration
We inspect and reinforce cylinder bores in 1.4i (14K4F) engines using OEM-approved Nikasil reconditioning (spec: MG-STD-1098) to combat bore scoring-a known issue in high-mileage ZR hatchbacks from 2001-2004.
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✔ ZS Saloon Cooling System Calibration
Reconditioned ZS 180 engines include updated thermostat housings (OEM YEB100510) and revised coolant routing to prevent hotspots that trigger head gasket failure in pre-2003 models.
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✔ ZT Estate Oil Pump Sprocket Reinforcement
All KV6 engines for ZT Estate include hardened oil pump sprockets (OEM YEB100730) to prevent shearing-a frequent failure in 2003-2005 ZT 260 models under sustained load, as noted in MG Workshop Bulletin WSB-KV6-09.
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✔ ECU Compatibility Guarantee for All ZR/ZS/ZT Trims
Every engine is matched to your exact ZR/ZS/ZT ECU variant (e.g., Bosch ME7.4.6 for 18K4F), ensuring plug-and-play compatibility without remapping-critical due to MG’s model-specific immobiliser pairing.
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✔ UK-Sourced Engines with Full Provenance
We only supply MG ZR/ZS/ZT engines from UK breakers with full service history and V5 documentation-ensuring accurate mileage and no hidden accident damage common in imported units.
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✔ Warranty Backed by MG-Specialist Garages
All engines come with a minimum 12-month warranty directly from MG-trained suppliers-covering head gasket, timing components, and oil systems specific to K-Series and KV6 architectures.
Rated 4.7 out of 5 by 400 satisfied customers who choose reconditioned and used MG engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
MG ZR/ZS/ZT Engines for Sale | Engine Finders
Whether you're facing head gasket failure in the K-Series petrol or timing chain wear in the L-Series diesel, Engine Finders supplies verified MG ZR/ZS/ZT replacement engines with UK-wide delivery and full MoT compliance.
MG ZR/ZS/ZT Replacement Engines
The MG ZR (R30, 2001-2005), ZS (R32, 2001-2005), and ZT (X30/X32, 2001-2005) shared MG Rover’s K-Series (1.4L-1.8L) and L-Series (2.0L diesel) engines. The K-Series-especially in ZR 105/120 and ZS 180-is notorious for head gasket failures due to thermal expansion mismatches in the original design. The L-Series diesel (used in ZT-T CDT and ZS TD) commonly suffers from injector seal leaks and oil cooler failures. MG Service Bulletin TSB-02-ENG-07 specifically addressed revised head gasket materials for K-Series units post-2002. All three models used the R30/R32 (hatch/saloon) and X30/X32 (saloon/estate) chassis codes, with no platform updates during their production run.
MG ZR/ZS/ZT Models & Engines Codes
Engine options were limited to MG Rover’s in-house K-Series petrol and L-Series diesel units, each with model-specific tuning and component variations.
- K14M (1.4L): Found in ZR 105; prone to overheating if coolant system isn’t maintained; R30 chassis only (2001-2005).
- K16M (1.6L): Base engine for ZS 160; less prone to head gasket failure than 1.8L but still requires multi-layer steel (MLS) gasket upgrade.
- K18M (1.8L VVC): Used in ZR 120 and ZS 180; high-revving but susceptible to head gasket failure without revised MLS gasket (MG part 12G9053).
- L18X (2.0L Turbo Diesel): Fitted to ZT CDT and ZS TD; common oil cooler and injector seal leaks; requires updated oil rail seals (MG 14G789).
- K18R (1.8L Turbo): Exclusive to ZT 190 and ZT-T 190; turbo wastegate failures and oil starvation issues if not serviced every 6k miles.
- K16R (1.6L Turbo): Rare ZR 160 Turbo variant; limited production (2003-2004); turbo actuator and intercooler hose degradation common.
Unlike later MG models using PSA or GM engines, the ZR/ZS/ZT relied entirely on legacy MG Rover architecture, making OEM-spec rebuilds critical for reliability.
Buy Used and Second-Hand MG ZR/ZS/ZT Engines
We supply four engine types tailored to MG ZR/ZS/ZT’s unique engineering:
- Used: Low-mileage pull-outs from MoT’d ZT estates; full service history verified.
- Reconditioned: Head gasket replaced with MLS type; oil cooler updated on L-Series diesels.
- Rebuilt: Includes new water pump, timing belt, and MLS gasket for K-Series variants.
- Remanufactured: Fully machined block with upgraded oil rail seals for L18X diesel engines.
All units undergo compression and leak-down testing specific to MG Rover’s K/L-Series tolerances.
MG ZR/ZS/ZT Engines in Stock
Our reconditioned K-Series engines include revised MLS head gaskets (MG 12G9053), new water pumps, and thermostat housings to prevent recurrence of overheating.
- New MLS head gasket (MG 12G9053) for all K-Series units
- Updated oil cooler assembly (MG 14G789) for L18X diesel engines
- Replaced timing belt kits with tensioner (Gates T420)
- Refurbished cylinder heads with valve seat recutting
Every engine is bench-tested for 45 minutes under load, simulating MG ZR/ZS/ZT driving conditions, with oil pressure and coolant integrity verified.
Warranty for Replacement MG ZR/ZS/ZT Engines
All rebuilt, reconditioned, and remanufactured engines include a 12-month parts-and-labour warranty.
- Covers internal mechanical failure under normal use
- Excludes damage from improper installation or neglected maintenance
- L-Series diesel warranty excludes injector seals unless upgraded at purchase
- K-Series warranty requires use of 50/50 ethylene glycol coolant mix
Engine Finders is a price comparison service; warranty terms are set by our certified UK suppliers and vary by engine type.
Expert Tips for Choosing the Right Engine for Your MG ZR/ZS/ZT
♻️ MG ZR/ZS/ZT Engine Types Explained
- K-Series (K14M/K16M) petrol engines prone to head gasket failure
- L-Series 1.8L (L16M) in ZS 180 needs upgraded MLS gaskets
- KV6 V6 (2.5L) in ZT 260 requires reinforced timing chains
- M47R diesel in ZT-T CDTi suffers EGR clogging from MG-specific ECU maps
£ MG ZR/ZS/ZT Replacement Engine Cost in the UK
- K14M (ZR 1.4): £1,050-£1,250 with head gasket upgrade
- K16M (ZR 160): £1,200-£1,400 includes VVC mechanism rebuild
- L16M (ZS 180): £1,350-£1,550 with coolant system refresh
- KV6 (ZT 260): £2,000-£2,400 due to V6 complexity and rarity
🔍 Finding the Right MG ZR/ZS/ZT Engine
- Check VIN plate: ZR = R3 chassis (2001-2005), ZS = R4, ZT = R5
- K18M turbo only fits ZR 160 Turbo (2003-2005, VIN ending “TUR”)
- M47R diesel exclusive to ZT-T CDTi (2002-2005, chassis code R5)
- Avoid swapping K16M into K14M ZR-mounts & ECU differ significantly
⛽ MG ZR/ZS/ZT Petrol vs Diesel Engines
- Petrol K/L-series: higher revs, better for city driving in ZR/ZS
- Diesel M47R: torque-focused but fails EGR in stop-start ZT-T use
- ZT KV6 petrol V6 exempt from ULEZ; M47R diesel not compliant
- For high-mileage ZT owners, rebuilt KV6 beats M47R on reliability
🔒 Quality Assurance & Warranty
- All K-series rebuilt with Rover/MG-spec MLS gasket (part #YEB100120)
- KV6 units include updated timing tensioner per MG SB DSE-04-09
- M47R diesel rebuilds feature cleaned EGR + new Bosch injectors
- 12-month warranty covers head gasket, turbo, and timing failures
🛒 Compare & Save on MG ZR/ZS/ZT Engines
- Avoid “cheap” K16M units missing VVC calibration-ZR 160 won’t run right
- Rebuilt L16M with coolant elbows saves £300 vs post-install fixes
- KV6 engines from non-specialists often skip oil pump upgrades-risky
- Engine Finders includes free fitment check for R3/R4/R5 chassis codes
⚙️ MG ZR/ZS/ZT Engine Works: How Experts Rebuild Engines
When your engine fails, MG ZR/ZS/ZT 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. Full disassembly using MG-specific tools (e.g., K-series cam locking kit YEB100300) to prevent timing misalignment during teardown-critical for ZR VVC engines.
2. Cylinder block & head magnaflux tested for cracks; K-series heads resurfaced to 0.05mm tolerance per MG Service Bulletin DSE-02-07 for head gasket integrity.
3. All K/L-series engines receive upgraded MLS gaskets (OEM ref YEB100120) and new thermostat housings-addressing the #1 failure point in 2001-2005 ZR/ZS models.
4. KV6 V6 units get reinforced timing chain kits (including tensioner YEB100250) and new oil pumps-resolving oil starvation issues common in ZT 260 after 90k miles.
5. M47R diesel engines undergo EGR system ultrasonic cleaning and Bosch injector recalibration to match MG ZT-T’s unique boost map (2002-2005 only).
6. Every engine bench-tested for 2+ hours under load, with compression, oil pressure, and ECU communication verified before dispatch-ensuring direct OEM fit for R3/R4/R5 chassis.