Free Expert Technical Advice about your engine problems
Advanced Engine Diagnostics and Fitting Services
Vehicle Recovery service available
Select your Vehicle Detail
Satisfied Customer Reviews
BM Engine Works
4.6
(283)
5
4
3
2
1
4.6
(283) reviews
samuil rusu
1 week ago
Abz R
1 week ago
I purchased a engine for my bmw the service was very efficient smooth process and delivered on time highly recommended company for all you’re bmw engi...Read more
MR HOQUE
1 week ago
Excellent guy
Good team
Very polite
Made to feel like your at home
Irbaz Ahmed
1 week ago
Very good service and fast, once on the ramp vehicle done within a week, highly recommend very good people and very honest. Top people
Louie Port
2 weeks ago
Had my car engine changed by these guys, they changed the engine, the turbo and the clutch
Sonuc Saltunc
2 weeks ago
Dropped my Range Rover to BM works, car is spot on, good customer service and turnaround
Myles Croxford
1 month ago
Great service and communication from Leon. Definitely recommended!
Glen Allan
1 month ago
Easy and honest garage. Can’t complain
Zac H
1 month ago
Absolutely outstanding service from BM Engine Works.
These guys really know what they're doing. From start to finish, the service was professional, h...Read more
Dorin Furtuna
1 month ago
Best garage recommended
BMW 325d Engines
Model Name
Engine code
Year
Engine size
Chassis
Fuel
KW
HP
Cylinders
Valves
3 Series 325d
B47 D20 B
2016-2018
1995cc
1
Diesel
851
1701
41
161
3 Series 325d
N47 D20 D
2011-2016
2.0
F30, F35, F801
Diesel
1501
1601
41
161
3 Series 325d
N57 D30 A
2010-2011
3.0
E901
Diesel
1501
2101
61
241
3 Series 325d
M57 D30 (306D3)
2006-2011
3.0
E901
Diesel
1351
1731
61
241
Reliable BMW 325d Engines for Sale at Bargain Prices
The BMW 325d engine is known for its balance of performance, efficiency, and reliability and is used across several BMW models. BMW 325d engine replacement requires BMW specific training, tools and experience to get the job done according to factory standards. BM Engine Works supplies used and reconditioned BMW engines at affordable prices.
With over 30 years of experience in this field, we offer low mileage used BMW 325d engines that can be fitted in your vehicle on short notice, or you can go for reconditioned BMW engines that perform as well as a new BMW 325d engine. Our experts can also rebuild the 325d engine if the engine block is intact.
Common BMW 325d Problems, Causes and Our Solution
Featuring BMW’s advanced engineering technology, 325d engine is designed to deliver smooth power output, fuel efficiency and long term reliability. However, over time, some BMW engines may develop faults due to high mileage and delayed servicing.
Common Engine Problem
Early Warning Signs or Causes
Our Engine Solution
Timing chain wear or failure
Rattling or ticking during cold starts, rough running, engine management warning lights, timing related fault codes or difficulty starting. Wear may be accelerated by extended oil change intervals, worn guides or a weak tensioner.
We can supply a fully inspected used or reconditioned replacement engine. Where appropriate, the engine is fitted with a renewed timing chain system, including the chain, guides and tensioner, before installation.
Turbocharger failure or boost pressure loss
Reduced acceleration, limp mode, whistling or whining noises, excessive smoke, increased oil consumption and boost pressure fault codes. Common causes include bearing wear, blocked oil feeds, contaminated oil, damaged hoses or a sticking actuator.
Our replacement engines can be supplied with a tested turbocharger or a professionally refurbished unit. We also recommend checking the intercooler, oil feed pipes, intake system and boost hoses before fitting.
Oil leaks and excessive oil consumption
Oil spots beneath the vehicle, a burning oil smell, smoke from the engine bay, low oil level warnings or frequent oil top ups. Ageing gaskets, seals, crankcase ventilation faults and overheating can cause or worsen leaks.
We supply engines inspected for oil leaks and can replace common seals and gaskets during reconditioning. The replacement engine is pressure checked where required, with the lubrication and crankcase ventilation systems inspected before installation.
Cooling system failure and overheating
Rising temperature, coolant warnings, coolant loss, a sweet smell, visible leaks, steam, poor cabin heating or an overheating engine. Typical causes include water pump failure, thermostat faults, cracked plastic components, damaged hoses or a blocked radiator.
We can provide a replacement engine with renewed cooling system components where required. Before installation, the cooling system should be pressure tested and the water pump, thermostat, hoses, radiator and expansion tank checked.
EGR, DPF and intake carbon build up
Engine management lights, reduced performance, uneven running, frequent regeneration, excessive fuel consumption, smoke or limp mode. Short journeys, low speed driving and soot accumulation can prevent effective regeneration and restrict airflow.
We can supply a tested replacement engine and advise on cleaning or replacing affected intake and emission components. The EGR system, DPF, intake manifold, sensors and exhaust system should be diagnosed rather than replacing the engine without confirming the root cause.
Internal engine wear or bottom end damage
Deep knocking, metallic particles in the oil, low oil pressure, heavy smoke, misfires, poor compression or complete engine seizure. Low oil levels, missed servicing, overheating, oil starvation and prolonged operation after a warning light can cause severe internal damage.
Our solution is a professionally inspected replacement or reconditioned engine, selected to match the vehicle’s required specification. We can supply engines with tested cylinder compression, inspected bearings and renewed seals, subject to the agreed rebuild specification.
Why Choose BM Engine Works for BMW 325d Engine Replacement?
We only deal in BMW specific engines and have over 30 years of experience in sourcing and providing both used and reconditioned BMW 325d engines. We source low mileage used engines from reliable engine providers. We put those engines through a Model of tests and only choose the engines that work like clockwork.
We choose low mileage engines and recondition them in house, strip the engine to the block, replace every worn out component, and our experts put the engine back together. Since we use BMW specific tools and OEM quality parts, our reconditioned BMW engines perform as well as brand new BMW engines.
We offer fast and secure UK wide delivery and offer professional factory grade BMW engine fitting service. You can book the appointment by simply calling us or filling out the simple form on our website. Our professional staff take care of you at every step to ensure you get your BMW back on the road with a perfectly working BMW 325d engine within a few days at a price you can afford.
Enter REG
Enter BMW's registration number to locate replacement engine ancillary parts that fit your car.
Select Part
Select the part or parts you are searching for your vehicle and confirm contact details.
View Prices
View the prices of all the used and reconditioned engine ancillary parts that will fit your vehicle available in stock.
Place Your Order
Order online for a quick delivery or book an appointment for our supply and fit service.
This BMW X5 30d underwent a complete engine replacement by our engine replacement specialists, restoring strong performance, smooth driving, and long-term reliability.
BMW 335d xDrive M Sport – N57D30B Engine Replacement
Vehicle In 05-Jan-2026
Vehicle Out 09-Jan-2026
Initial Diagnosis
This BMW 335d xDrive M Sport arrived with serious engine concerns and was upgraded with a replacement N57D30B engine, restoring performance, power, and reliability.
This BMW 428i came in with engine-related faults and was upgraded with a fully reconditioned N20B20B engine from our stock, restoring smooth performance and reliability.
2013 BMW 320i M Sport Auto Convertible – Engine Replacement
Vehicle In 09-Dec-2025
Vehicle Out 13-Dec-2025
Initial Diagnosis
This BMW 320i M Sport Convertible came in for engine replacement. A low-mileage engine was supplied and fitted, restoring smooth performance and everyday reliability.
This track ready BMW M4 required an engine upgrade instead of factory unit. We provided S55B30A engine and fitted it perfectly,ensuring stronger Performance.
