




4 mins from Harrow On The Hill station


If your vehicle is fitted with a wet timing belt, its replacement needs more than a routine belt change. The belt runs inside the engine and relies on the correct oil and servicing to stay in good condition. As it deteriorates, material from the belt can contaminate the oil and restrict the lubrication system.
Harrow Service provides wet belt replacement for all makes and models, carried out by our Bosch-accredited technicians. We normally complete the work within 2 days, so you can get your car back without leaving it at the garage for longer than necessary.
We don’t treat a wet belt change as a simple belt swap. The exact work depends on the engine and its manufacturer’s procedure, including how the belt is accessed and which associated components need replacing at the same time.
Our technicians follow the appropriate manufacturer specifications for your vehicle and use quality parts for the job. The timing also needs to be set correctly once the new belt is fitted, so the engine is ready to run as it should.
If your belt has started to deteriorate, we can also check for signs of contamination within the oil system and advise you if further work is required.
Our Harrow on the Hill workshop carries out full belt in oil replacements for all major vehicle manufacturers utilising internal timing belts.
As a Bosch approved garage, we undertake wet belt overhauls for:
Whether your car needs a scheduled belt renewal or an urgent sump flush due to rubber breakdown, our mechanics use manufacturer-recommended timing alignment setups and correct grade engine oil to safeguard your vehicle’s oil pressure.
Wet belt intervals vary between engines, so there isn’t one mileage that applies to every car. Your vehicle’s service history and manufacturer schedule are the best starting points.
If you’ve bought a used car without clear belt records, been told your wet belt is due, or are concerned about its condition, our technicians can inspect the system and check the recommended replacement intervals and advise you on the work required.
We provide a free 1 year or 12,000 miles guarantee (whichever occurs first) on all parts and labour on top of manufacturers standard guarantee for that extra peace of mind.
If you can’t make it into us, we offer a local pickup and delivery service.
We will pick up your vehicle (if in a drivable condition), undertake work and deliver it back to your chosen location once work is complete.
Please call us on 020 8863 0760 or fill in the form below to submit your enquiry. We typically reply during office hours.





Excellent experience from start to finish. Took my Audi Q5 in after bad experience with Audi Main dealers, it was a total difference. Communication was brilliant, staff very friendly and welcoming. I was kept informed all the way
Peter Tomkins (Google Review)
Monday - Friday
8.30am - 5.30pm
Saturday
8.30am - 2pm
Sunday (MOT only)
10am - 2pm
Monday - Friday
8.30am - 5.30pm
Saturday
8.30am - 2pm
Sunday (MOT only)
10am - 2pm