BMW Garage
BMW Petrol Timing Chain Repair (N20)
Precise timing chain replacement for BMW N20 engines, including chain, guides, tensioners, and VANOS verification.
15+ yrs
BMW specialists
1,800+
engines rebuilt
12 mo
unlimited-mileage warranty
What This Service Involves
BMW N20 timing chain replacement is a specialist procedure performed in our workshop. The service includes full strip-down access to the front-mounted timing chain, replacement of the chain, guides, and tensioners, and reassembly with precision timing tools. We use genuine or OEM-quality parts, BMW-spec locking tools, and digital torque equipment. After reassembly, we verify VANOS operation and perform compression and leak-down tests to confirm sealing integrity.
From £1,900
N20 timing chain replacement (parts & labour)
Inside our workshop
BMW Petrol Timing Chain Repair (N20)
Applicable Models & Engines
BMW 3 Series (F30/F31)
BMW 4 Series (F32/F33/F36)
BMW 5 Series (F10/F11)
BMW X1 (E84)
BMW Z4 (E89)
Our Process
- 01
Engine preparation
Ancillary components removed for timing cover access.
- 02
Timing locking
Specialist tools lock camshafts and crankshaft in correct position.
- 03
Component replacement
Chain, guides, and tensioners replaced with updated parts.
- 04
VANOS verification
BMW-specific software checks variable valve timing operation.
- 05
Testing
Compression and leak-down tests confirm sealing integrity.
Why Choose Us
- Specialist BMW workshop since 2009
- BMW-spec timing tools and diagnostic equipment
- Genuine and OEM-quality parts used
- 12-month unlimited-mileage warranty on all rebuilds
- Fixed-price quotes after inspection
How It Works
- 01
Contact us or use the reg lookup for a quote
- 02
Vehicle inspection and fixed-price estimate
- 03
Specialist timing chain replacement in our workshop
- 04
Testing and handover
FAQs
What is included in the N20 timing chain replacement?+
The service includes replacement of the timing chain, guides, tensioners, gaskets, and seals, plus full timing setup with BMW-spec locking tools, VANOS verification, and compression/leak-down testing.
How long does an N20 timing chain repair take?+
Typically 3-5 working days, depending on vehicle condition and any additional findings during inspection.
Do you use genuine BMW parts?+
Yes, we use genuine BMW or OEM-quality parts for all timing chain repairs.