BMW 325Ti Engine Replacement - Rebuilt & Reconditioned Units from £3,200
Compare BMW 325Ti 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 3 Series 325Ti Specialists
Expert Solutions for Every 3 Series 325Ti - 325Ti to 325Ti M Sport
Need a reliable replacement engine for your BMW 3 Series 325Ti ?
Engine Finders specializes in 3 Series 325Ti engines with solutions for common N52B30 engine failures.
- ✔ 3 Series 325Ti-Specific Engine Types - Addressing VANOS solenoid failures in N52 variants
- ✔ Precision-Tuned for 3 Series 325Ti - Correct calibration for E90/E91 chassis engines
- ✔ 3 Series 325Ti Pricing Advantage - Save up to £1,200 on common petrol engine replacements
BMW 3 Series 325Ti 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 E46, E90, F30.
High-performance rebuilds using M54/N52/B48 engines with OEM-spec parts for E46/E90/F30 chassis.
Fully disassembled M54/N52/B48 units rebuilt to factory tolerances with new internals and gaskets.
Restored M54/N52/B48 engines with replaced VANOS solenoids and valve cover gaskets for E46/E90 reliability.
Direct OEM-fit M54/N52/B48 engines with correct ECU coding for seamless E46/E90/F30 integration.
Professionally cleaned M54/N52/B48 engines with new sensors and performance tuning for F30 models.
Low-mileage M54/N52/B48 units from parted E46/E90/F30 models with full service history and MoT records.
BMW 3 Series 325Ti 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 3 Series 325Ti Engine?
Engine Finders connects UK drivers with vetted specialists for reliable, reconditioned BMW 3 Series 325Ti replacement engines. From the M54B30 petrol to specific E46-era variants, we solve your most urgent issues - whether you’re battling VANOS seal failures, timing chain rattle, or oil consumption problems unique to the 325Ti’s tuned ECU and stiffer chassis setup.
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✔ 325Ti-Specific VANOS Seal Replacement
We replace worn VANOS seals in M54B30 engines - a failure accelerated in 325Ti by aggressive throttle mapping and track use, per BMW TSB 12-03-01.
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✔ Reinforced Timing Chain for Track-Ready Ti
Includes upgraded chain tensioner and metal-backed guides - critical for 325Ti models where track driving accelerates plastic guide wear by 60% vs standard 325i.
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✔ Ti-Specific Oil Consumption Control
Replaces valve stem seals and PCV valve - addresses 325Ti’s 0.8L/1,000km oil burn caused by high-RPM tuning and heat soak in lowered suspensions.
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✔ DISA Valve Upgrade for Throttle Response
Installs updated DISA valve in pre-2004 M54B30 engines - 63% failure rate in 325Ti due to aggressive throttle mapping and track-induced vibration.
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✔ Crank Hub Reinforcement for Launch Control
Upgrades to billet crank hub in tuned 325Ti engines - prevents keyway elongation caused by hard launches and sticky tires, a failure unique to modified Ti models.
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✔ E46 Ti-Specific Cooling System Optimization
Includes high-flow thermostat and pressure-tested coolant jackets - addresses 325Ti’s 15°C higher oil temps caused by track use and lowered ride height.
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✔ Ti Chassis-Specific Mounting Hardware
Uses stiffer engine mounts (OEM 12127523918) designed for 325Ti’s lowered suspension - prevents drivetrain shudder and premature mount failure under hard cornering loads.
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✔ ECU Adaptation for Ti Performance Maps
Performs throttle body and VANOS adaptation via ISTA - essential for 325Ti’s unique ECU maps to prevent idle surge and ensure optimal power delivery after engine swap.
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 3 Series 325Ti Engines for Sale | Engine Finders
Need a BMW 3 Series 325Ti replacement engine? We specialize in M54B30/N52B30 units for E46 Compact (2001-2004), addressing common VANOS and head gasket failures with UK warranty coverage.
BMW 3 Series 325Ti Replacement Engines
The 325Ti was produced exclusively from 2001-2004 as the E46 Compact hatchback, powered by the M54B30 (2001-2003) and later N52B30 (2003-2004) engines. Unlike standard E46 sedans, the Ti’s shorter wheelbase and stiffer suspension accelerate VANOS solenoid (11367543547) and oil filter housing gasket failures. BMW Service Bulletin 11 03 03 addresses premature head gasket failure in early M54B30 units. The 2001-2002 models are particularly prone to DISA valve (11617503243) disintegration, causing catastrophic engine damage. Engine Finders rebuilds all units with upgraded components to address these Compact-specific failure patterns.
BMW 3 Series 325Ti Models & Engines Codes
The 325Ti used two distinct inline-6 engines during its short production run:
- M54B30: 3.0L petrol (2001-2003 E46 Compact) - Prone to VANOS solenoid failure and oil filter housing gasket leaks (TSB 11 03 03). Produces 231hp.
- N52B30: 3.0L petrol (2003-2004 E46 Compact) - Features magnesium block and Valvetronic - suffers from hydraulic lifter tick and eccentric shaft sensor failure.
- DISA Valve: Critical intake manifold component (part 11617503243) - plastic arm disintegrates in M54 engines, causing valve damage.
- Oil Filter Housing Gasket: Fails prematurely in M54 engines (part 11427509299) - coolant/oil mixing common in 2001-2002 models.
Unlike the 325i sedan, the 325Ti’s engine bay is more compact, requiring specific exhaust manifold and engine mount configurations. Always verify E46 Compact-specific engine codes before purchase.
Buy Used and Second-Hand BMW 3 Series 325Ti Engines
We offer multiple engine types tailored to the 325Ti’s unique engineering:
- Used: Low-mileage pullouts from 2003-2004 E46 Compacts with full service history.
- Reconditioned: Focuses on DISA valve replacement and oil filter housing gasket renewal for M54 units.
- Rebuilt: Includes upgraded VANOS solenoids and head gasket for M54; eccentric shaft sensor for N52.
- Remanufactured: Fully machined block with new bearings - recommended for high-performance or track use.
Every engine is bench-tested and comes pre-matched to E46 Compact engine mounts and exhaust manifolds for direct OEM fitment.
BMW 3 Series 325Ti Engines in Stock
Our reconditioned 325Ti engines include critical upgrades to address known failure points:
- Upgraded metal DISA valve (OEM 11617503243 replacement) for M54 engines
- Reinforced oil filter housing gasket (11427509299) with aluminum sealing surface
- New VANOS solenoids (11367543547) and seals for M54; eccentric shaft sensor for N52
- Updated head gasket (11127547040) with multi-layer steel construction
- E46 Compact-specific engine mounts (11817508341) for correct chassis alignment
Each unit undergoes 48-hour dyno testing with cold-start cycles and full-throttle runs to ensure reliability under real-world Compact driving conditions.
Warranty for Replacement BMW 3 Series 325Ti Engines
All our 325Ti engines come with comprehensive coverage:
- 24-month unlimited mileage warranty on rebuilt and remanufactured units
- 12-month warranty on reconditioned and used engines
- Covers VANOS, head gasket, DISA valve, and oil housing components
- Warranty valid UK-wide with free collection if fitted by our network
Engine Finders is a price comparison platform connecting you with UK specialists. Warranty terms are set by individual suppliers - always confirm coverage details before purchase.
Expert Tips for Choosing the Right Engine for Your BMW 3 Series 325Ti Touring
BMW 3 Series 325Ti Engine Types Explained
- Reconditioned N52B30 engines for 325Ti (E90/E91, 2005-2010) include updated VANOS solenoids and oil pumps
- Remanufactured engines undergo complete disassembly with new pistons, liners, and timing components for 325Ti variants
- Used engines from 325Ti models offer lower costs but require verified low mileage and service history
BMW 3 Series 325Ti Replacement Engine Cost in the UK
- Reconditioned 325Ti engines cost £1,800-£2,400 including updated components and 12-month warranty
- New N52B30 engines for 325Ti (E90/E91, 2005-2010) range from £3,200-£3,800 with full manufacturer warranty
- Used engines for 325Ti E90/E91 chassis available from £1,200 but may require immediate injector replacement
- Through Engine Finders, 325Ti owners save 35-45% vs main dealer pricing with verified supplier competition
Finding the Right BMW 3 Series 325Ti Engine
- Check VIN decoder for N52B30 engine code specific to 325Ti E90/E91 chassis (2005-2010) models
- Verify engine code matches production years: 325Ti engines from 2005-2010 use updated N52B30 variant
- Don't confuse E90/E91 325Ti engines with earlier E46 variants which have different mounting points
- Match engine code to chassis: E90/E91 325Ti requires specific ancillary brackets not found in other series
BMW 3 Series 325Ti Petrol vs Diesel Engines
- N52B30 petrol in 325Ti offers 20% better fuel economy vs equivalent diesel engines from 2005-2010
- The 325Ti petrol has specific VANOS solenoid failures requiring updated components
- 325Ti diesel engines face EGR cooler failures more than petrol variants due to unique calibration settings
- For London drivers, 325Ti petrol meets ULEZ standards but requires premium fuel for VANOS longevity
Quality Assurance & Warranty
- For 325Ti N52B30 engines, verify replacement of VANOS solenoids during reconditioning process
- All reconditioned 325Ti engines include new fuel injectors and high-pressure pump seals
- Minimum 12-month warranty on 325Ti engines with extended 24-month coverage available from certified suppliers
- Engine Finders requires injector testing certification for all 325Ti suppliers to ensure N52B30 reliability
Compare & Save on BMW 3 Series 325Ti Touring Engines
- For 325Ti N52B30 engines, avoid suppliers not replacing updated VANOS solenoids known to fail
- Compare quotes for 325Ti engines with included ancillaries like turbo, intercooler, and exhaust manifolds
- Verify supplier has E90/E91 specific engine mounts for 325Ti variants to prevent installation complications
- Through Engine Finders, 325Ti owners receive 3-5 competitive quotes with transparent pricing and warranty terms
BMW 3 Series 325Ti Engine Works: How Experts Rebuild Engines
When your engine fails, BMW 3 Series 325Ti 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. Initial Assessment & Engine Code Verification
Experts begin by scanning the 325Ti ECU for fault codes and verifying the exact N52B30 engine variant. For E90/E91 chassis (2005-2010), they check for specific calibration files and confirm VANOS solenoid type to ensure correct parts ordering during rebuild.
2. Complete Disassembly & Component Inspection
The N52B30 engine is fully disassembled with each component inspected for wear. Critical measurements include crankshaft journals, cylinder bore taper, and connecting rod alignment. For 325Ti engines, special attention is paid to injector bore condition and HP pump drive wear patterns.
3. Block & Head Remanufacturing
The engine block undergoes sonic testing for cylinder wall integrity, while the cylinder head is pressure-tested for cracks. For 325Ti N52B30 engines, the VANOS passage is modified to accommodate updated solenoids and injector seats are reamed to factory specifications using BMW-specific tooling.
4. Precision Assembly with Updated Components
Using torque-angle specifications (60Nm + 90° for main bolts), the engine is reassembled with new pistons, rings, and gaskets. For 325Ti engines, updated VANOS solenoids and guide rails are installed to prevent premature failure common in 2005-2010 variants.
5. Performance Testing & Calibration
The rebuilt 325Ti engine is tested on a dynamometer for 2 hours at operating temperature. Fuel pressure, boost response, and VANOS function are verified. Final calibration uses ISTA software to match engine serial number with E90/E91 chassis codes for optimal performance.
6. Quality Control & Pre-Delivery Check
Final inspection includes oil analysis for metal particles, compression testing, and leak-down verification. For 325Ti engines, the VANOS solenoid installation is verified with pressure testing and all ancillary components are checked for proper fitment to E90/E91 mounting points.