Mercedes Benz SLS AMG Black Series Engine Replacement Compare Prices & Get Quotes

Short summary: A rebuilt M159.974 engine for the SLS AMG Black Series costs £26,000-£41,000 supply-only. Fitting adds £2,000-£3,500 depending on complexity - AMG V8 and dry sump work requires specialist knowledge.

• SLS AMG Black Series (M159.974): rebuilt unit £26,000-£41,000; used engine from £15,000
• M159.974 bearing replacement: £10,000-£14,000 at specialist
• M159.974 dry sump pump rebuild: £2,200-£3,400 at specialist

Short summary: Oil analysis showing elevated bearing metals, bearing knock, or low oil pressure warnings are the classic warning signs on the M159.974 engine. The Black Series' extreme output and track-focused calibration make bearing wear the most critical issue.

• Oil analysis with elevated copper, lead or tin levels
• Bearing knock or metallic tapping noise from the engine
• Low oil pressure warnings
• If caught early, bearing replacement costs £10,000-£14,000 at specialist

Short summary: The multi-stage dry sump scavenge pump can suffer seal degradation and bearing wear under sustained lateral G-forces on track, reducing oil pressure to critical components. This is a critical failure that can destroy crank and rod bearings at speed.

• Dry sump pump seal degradation from track use
• Low oil pressure warnings at speed
• Bearing knock or engine noise
• If caught early, pump seal refresh costs £2,200-£3,400 at specialist

Short summary: The M159.974 is a hand-built masterpiece - the most powerful naturally aspirated V8 ever produced by AMG. However, its track-focused design creates unique challenges. High-RPM bearing wear, crankshaft bearing fatigue, and piston ring wear are the most critical issues. With regular maintenance and proactive attention to known issues, the engine is fundamentally strong.

• Hand-built AMG construction with individual builder plaque
• High-RPM bearing wear is the most critical issue on track-used examples
• Dry sump lubrication requires specialist oil pressure calibration
• Regular oil analysis is essential for track-used Black Series examples

Short summary: Properly maintained M159.974 engines routinely reach 80,000-100,000 miles before major work, but track-used examples may require bearing attention from 40,000 miles. Regular oil analysis is essential for track-used Black Series examples.

• M159.974 (Black Series): 80,000-100,000 miles with regular servicing
• Bearing inspection recommended from 40,000 miles on track-used examples
• Oil analysis every 5,000 miles for track-used vehicles
• Service interval is 10,000 miles or 12 months - use Mercedes-spec MB 229.5 oil

Short summary: Yes, if the Black Series is otherwise in good condition with no rust or major transmission faults. A rebuilt M159.974 costs £26,000-£41,000 - far less than the £200,000-£350,000+ value of a clean Black Series. Investment-grade documentation, dyno certification, and unlimited warranty preserve provenance while restoring performance.

• Black Series values: £200,000-£350,000+ depending on condition and mileage
• Rebuilt engine with upgraded components fixes original weak points
• Supply & fit typically £28,000-£44,500 depending on engine code
• New engine includes 12-month unlimited mileage warranty