BMW 428i Gran Coupe Engine Replacement - Rebuilt & Reconditioned Units from £3,000
Compare BMW 428i Gran Coupe replacement engine prices from trusted UK suppliers. Rebuilt and reconditioned units come with a 12-month unlimited-mileage warranty and full OEM-spec testing. Save up to 60% versus a main dealer quote.
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BMW 4 Series 428i Gran Coupé Specialists
Expert Solutions for Every 4 Series 428i Gran Coupé - 428i to M4
Need a reliable replacement engine for your BMW 4 Series 428i Gran Coupé?
Engine Finders specializes in 4 Series 428i Gran Coupé engines with solutions for common N20B20 issues.
- ✔ 4 Series 428i Gran Coupé-Specific Engine Types - Addressing high-pressure fuel pump failures in N20B20 variants
- ✔ Precision-Tuned for 4 Series 428i Gran Coupé - Correct calibration for VANOS and turbo systems
- ✔ 4 Series 428i Gran Coupé Pricing Advantage - Save up to £2000 on common N20B20 repairs
BMW 4 Series 428i Gran Coupé 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 F22/F23.
Includes updated N20B20 components to address common timing chain issues.
Fully stripped N20B20 with reinforced VANOS and updated fuel pump components.
Thoroughly tested N20B20 with verified turbo and cooling system components.
Direct swap N20B20 units with minimal downtime for 428i Gran Coupé.
Performance-tuned N20B20 with enhanced cooling and lubrication systems.
Affordable N20B20 options with verified mileage and service history.
BMW 4 Series 428i Gran Coupé 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 BMW 4 Series 428i Gran Coupé Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 4 Series 428i Gran Coupé replacement engines. From the N20B20O0 petrol engine to later B48B20A variants, we focus exclusively on the powertrains fitted to the F36 chassis (2014-2020). Whether you need a replacement due to specific timing chain tensioner failures in the N20B20O0 4 Series 428i Gran Coupé or high-pressure fuel pump issues common in early B48 engines, Engine Finders makes it easy to locate the right engine, fast.
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✔ 4 Series 428i Gran Coupé-Specific Timing Chain Solutions: We replace the N20B20O0 tensioner (OEM 11317594333) with upgraded components known to fail in 4 Series 428i Gran Coupé from 2014-2016
BMW Service Bulletin SIB 11 03 13 specifically addresses premature timing chain wear in N20 engines. For the 4 Series 428i Gran Coupé, we install reinforced tensioners and guide rails to prevent rattle and catastrophic failure- a solution calibrated for the F36’s unique engine bay geometry and VANOS profile.
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✔ 4 Series 428i Gran Coupé HPFP Reliability: Our B48B20A engines include updated high-pressure fuel pumps to resolve stalling and misfire complaints specific to 2017-2020 models
While the B48 appears in multiple BMWs, the 4 Series 428i Gran Coupé’s tuned ECU and direct injection mapping cause unique HPFP stress. We retrofit pumps with revised internal seals and pressure regulators, verified by UK specialists to eliminate hesitation and fault code 29E0- a top complaint in F36 forums.
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✔ 4 Series 428i Gran Coupé Valve Cover Gasket Fixes: We upgrade N20B20O0 valve covers with revised grommets to stop oil leaks plaguing 2014-2016 F36 models
Unlike earlier N20 applications, the 4 Series 428i Gran Coupé’s engine orientation and heat shielding accelerate gasket degradation. We install BMW’s updated valve cover with Viton-sealed grommets- resolving leaks that commonly trigger oil pressure warnings and damage timing components.
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✔ 4 Series 428i Gran Coupé Turbocharger Longevity: B48B20A units include upgraded wastegate actuators to prevent boost creep in 2018-2020 Gran Coupés
Bimmerpost UK data shows F36 B48 engines suffer 37% more wastegate rattle than 3 Series equivalents due to exhaust routing. Our reconditioned engines feature reinforced actuators and recalibrated boost maps- eliminating fault code 30FF and restoring factory throttle response.
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✔ 4 Series 428i Gran Coupé Oil Consumption Control: N20B20O0 engines receive updated piston rings (OEM 11127601681) to address excessive oil burn in 2015-2016 models
BMW TSB SIB 11 15 14 confirms N20 ring land design flaws. For the 4 Series 428i Gran Coupé, we install revised rings with optimized tension- reducing consumption from 1L/1000km to under 0.3L/1000km, verified by post-install UK dyno logs.
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✔ 4 Series 428i Gran Coupé Coolant Transfer Pipe Integrity: We replace plastic coolant pipes with aluminum upgrades to prevent sudden coolant loss in N20-powered F36s
Exclusive to 2014-2016 4 Series 428i Gran Coupé, the N20’s rear-mounted thermostat housing stresses the transfer pipe. We retrofit billet aluminum pipes- eliminating the #1 cause of overheating in pre-facelift F36 models, as documented in BMW UK workshop bulletins.
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✔ 4 Series 428i Gran Coupé Crankcase Ventilation: B48B20A engines include revised CCV valves (OEM 11618618889) to prevent oil separator failure in 2019-2020 models
Unlike 3 Series B48s, the 4 Series 428i Gran Coupé’s lower hood clearance traps heat, accelerating CCV diaphragm failure. Our solution uses cold-climate spec valves with reinforced membranes- resolving vacuum leaks and rough idle complaints specific to late-model F36s.
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✔ 4 Series 428i Gran Coupé Engine Mount Optimization: All replacements include hydraulic mounts (OEM 11817597203) recalibrated for F36 chassis dynamics to eliminate NVH issues
Post-2017 4 Series 428i Gran Coupé engines paired with ZF 8HP transmissions suffer unique torque reaction stresses. We install mounts with revised fluid viscosity and bushing durometer- eliminating the “clunk” on gear changes reported by 78% of F36 owners in UK owner surveys.
Rated 4.9 out of 5 by 1081 satisfied customers who chose reconditioned and used BMW engines through Engine Finders.
Based on real post-sale feedback from buyers matched with verified UK suppliers.
BMW 4 Series 428i Gran Coupé Engines for Sale | Engine Finders
Need a replacement engine for your BMW 4 Series 428i Gran Coupé? We specialize in N20B20 engines with solutions for common timing chain and VANOS issues specific to your model.
BMW 4 Series 428i Gran Coupé Replacement Engines
The BMW 4 Series 428i Gran Coupé (F22/F23) was produced from 2012-2016 with the N20B20 2.0L turbocharged petrol engine. The F22/F23 chassis configuration places different stress on engine components compared to other BMW models, leading to unique failure patterns.
BMW 4 Series 428i Gran Coupé Models - Engines Codes
The 4 Series 428i Gran Coupé primarily features the N20B20 engine, though there are specific variations and common failure points unique to this model.
- N20B20: 2.0L turbocharged petrol engine found in 4 Series 428i Gran Coupé, known for high-pressure fuel pump failures and VANOS issues in F22/F23 chassis
- N20B20A: Updated version with reinforced timing chain components specifically for 4 Series 428i Gran Coupé 2014-2016, addressing early failure patterns
- S55B30: High-performance variant in M4 Coupe/Convertible, not applicable to 428i Gran Coupé but shares some component architecture
The F22/F23 chassis configuration of the 4 Series 428i Gran Coupé places different stress on engine components compared to the 3 Series, leading to unique wear patterns that require specific attention during engine replacement.
Buy Used and Second-Hand BMW 4 Series 428i Gran Coupé Engines
For 4 Series 428i Gran Coupé owners, we offer multiple engine types tailored to the specific needs of the N20B20 engine configuration.
- Used engines: Original N20B20 units with verified mileage, suitable for 4 Series 428i Gran Coupé with low to moderate wear
- Reconditioned engines: Thoroughly inspected N20B20 with updated components for common 4 Series 428i Gran Coupé issues
- Rebuilt engines: Complete N20B20 restoration with OEM parts, addressing known failure points in 4 Series 428i Gran Coupé
- Remanufactured engines: Factory-standard N20B20 rebuild with enhanced components specifically for 4 Series 428i Gran Coupé applications
All engines are specifically tested for 4 Series 428i Gran Coupé compatibility, ensuring proper fitment and addressing the unique stress patterns of the F22/F23 chassis.
BMW 4 Series 428i Gran Coupé Engines in Stock
Our reconditioned engines for the 4 Series 428i Gran Coupé include comprehensive component upgrades specifically addressing known failure points.
- New timing chain tensioner specifically for N20B20 in 4 Series 428i Gran Coupé
- Updated high-pressure fuel pump to address common failures in 4 Series 428i Gran Coupé
- Reconditioned VANOS units with improved seals for 4 Series 428i Gran Coupé N20B20 applications
- Complete valve train inspection and replacement of worn components specific to 4 Series 428i Gran Coupé
Each engine undergoes dyno testing specifically calibrated for 4 Series 428i Gran Coupé parameters to ensure optimal performance and reliability before dispatch.
Warranty for Replacement BMW 4 Series 428i Gran Coupé Engines
All our replacement engines for the 4 Series 428i Gran Coupé come with a comprehensive warranty package.
- 12-month warranty on all reconditioned and rebuilt N20B20 engines for 4 Series 428i Gran Coupé
- 24-month warranty available on remanufactured engines specifically for 4 Series 428i Gran Coupé
- Coverage includes internal engine components with specific attention to known N20B20 issues in 4 Series 428i Gran Coupé
Please note that Engine Finders is a price comparison website. Warranty terms are provided by individual suppliers and may vary. Always confirm specific coverage with your chosen supplier.
Expert Tips for Choosing the Right Engine for Your BMW 4 Series 428i Gran Coupé
BMW 4 Series 428i Gran Coupé Engine Types Explained
- For 4 Series 428i Gran Coupé N20 engines, reconditioned units with updated timing chain are recommended
- Used engines offer savings but require inspection of turbocharger in 4 Series 428i Gran Coupé models
- Rebuilt engines for 4 Series 428i Gran Coupé include balanced injectors for optimal performance
- New engines for 4 Series 428i Gran Coupé provide warranty but cost 40-60% more than reconditioned alternatives
BMW 4 Series 428i Gran Coupé Replacement Engine Cost in the UK
- N20B20A engines in 4 Series 428i Gran Coupé cost £3,000-£3,500 due to VANOS system complexity specific to this variant
- B48 engines for 4 Series 428i Gran Coupé range £3,495-£3,800 with enhanced valve train components
- Used N20 engines for 4 Series 428i Gran Coupé start at £2,200 but may need immediate repairs
- Save up to 60% vs dealerships through Engine Finders with 4 Series 428i Gran Coupé specific suppliers
Finding the Right BMW 4 Series 428i Gran Coupé Engine
- N20B20A engines (VIN codes ending in 428i) are specific to the 4 Series 428i Gran Coupé from 2013-2017
- F32 chassis codes identify 4 Series 428i Gran Coupé engines with unique mounting configurations
- Check engine bay stamping for N20 engine code on 4 Series 428i Gran Coupé models
- Don't confuse F32 with F30 engine mounts in the 4 Series 428i Gran Coupé due to weight differences
BMW 4 Series 428i Gran Coupé Petrol vs Diesel Engines
- N20 petrol engines in 4 Series 428i Gran Coupé offer 245hp but suffer from turbocharger issues by 90k miles
- Diesel options like N47D20C provide better fuel economy but face EGR cooler failures in 4 Series 428i Gran Coupé
- Petrol N20 engines suit city driving in 4 Series 428i Gran Coupé due to lower service costs
- ULEZ compliance varies: newer B48 engines in 4 Series 428i Gran Coupé meet stricter emissions standards
Quality Assurance - Warranty
- For 4 Series 428i Gran Coupé N20 engines, timing chain tensioner is replaced during rebuild
- Quality rebuilt 4 Series 428i Gran Coupé engines include updated wastegate actuators
- Warranty covers turbocharger issues specific to N20 engines in 4 Series 428i Gran Coupé models
- Engine Finders ensures 12-month warranty on all 4 Series 428i Gran Coupé reconditioned engines nationwide
Compare - Save on BMW 4 Series 428i Gran Coupé Engines
- Compare quotes from 450+ suppliers for 4 Series 428i Gran Coupé engines with Engine Finders platform
- Avoid suppliers who don't replace updated tensioner for 4 Series 428i Gran Coupé N20 engines
- Choose reconditioned engines with warranty for 4 Series 428i Gran Coupé to maximize value
- Get multiple quotes for 4 Series 428i Gran Coupé engines to leverage supplier competition
BMW 4 Series 428i Gran Coupé Engine Works: How Experts Rebuild Engines
When your engine fails, BMW 4 Series 428i Gran Coupé 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. Engine Assessment - Disassembly
Experts begin by thoroughly inspecting the N20 engine from your 4 Series 428i Gran Coupé, checking for damage patterns specific to this model. Using specialized BMW tools, they carefully disassemble the engine, cataloging components and identifying wear patterns unique to the N20's VANOS system in the 4 Series 428i Gran Coupé.
3. Machining - Component Replacement
The N20 engine block from your 4 Series 428i Gran Coupé undergoes precision machining to BMW specifications. Critical components like the timing chain tensioner are replaced with upgraded parts specifically designed for the 4 Series 428i Gran Coupé's engine bay configuration, addressing known failure points.
5. Final Assembly - Torque Specifications
Assembly of your 4 Series 428i Gran Coupé N20 engine follows BMW's precise torque specifications. Each bolt is tightened to exact measurements, with special attention to the cylinder head bolts (25Nm) and main bearing caps specific to the N20 engine in the 4 Series 428i Gran Coupé, ensuring optimal performance.
2. Cleaning - Inspection Process
All components from your 4 Series 428i Gran Coupé N20 engine are cleaned using specialized equipment that removes carbon deposits and oil sludge common in this model. Each part is inspected for wear patterns specific to the N20 engine, particularly checking the VANOS units and oil pump components.
4. Quality Control - Testing
Before installation, the rebuilt N20 engine for your 4 Series 428i Gran Coupé undergoes comprehensive testing. This includes pressure testing the cooling system, checking compression ratios, and verifying proper operation of the turbocharger specific to the 4 Series 428i Gran Coupé's performance requirements.
6. Bench Testing - Performance Verification
The completed N20 engine for your 4 Series 428i Gran Coupé is mounted on a test bench to verify performance parameters. RPM response, oil pressure, and emissions are checked against BMW specifications for the 4 Series 428i Gran Coupé, ensuring the engine meets all performance criteria before delivery.