BMW S55 Engine for Sale: Comprehensive Guide
bmw s55 engine for sale, The BMW S55 engine, an engineering marvel, powers some of the most iconic M models in the BMW lineup. This inline-six, twin-turbocharged engine is known for its exceptional performance, reliability, and versatility. Whether you’re upgrading your current vehicle, replacing a damaged engine, or building a custom car, finding the right BMW S55 engine for sale is crucial.
This article will guide you through the specifications, advantages, purchasing options, and frequently asked questions (FAQs) related to the BMW S55 engine.
Specifications of the BMW S55 Engine
General Overview:
- Type: Inline-6, twin-turbocharged
- Displacement: 3.0 liters (2,979 cc)
- Bore x Stroke: 84 mm × 89.6 mm
- Compression Ratio: 10.2:1
- Maximum Horsepower: 425–493 hp (depending on the variant and tuning)
- Maximum Torque: 406–442 lb-ft
- Fuel Type: Gasoline
- Valvetrain: DOHC, 4 valves per cylinder
- Cooling System: Water-cooled, with integrated oil cooler
Key Features:
- Turbocharging System:
- Two mono-scroll turbochargers provide instant boost response and high efficiency.
- Capable of up to 18.1 psi of boost pressure (stock configuration).
- Lightweight Construction:
- Aluminum block and head for reduced weight and improved heat dissipation.
- High-Performance Cooling:
- Optimized intercooling system with enhanced airflow for consistent performance under demanding conditions.
- Variable Valve Timing and Lift:
- BMW’s Double-VANOS and Valvetronic systems ensure smooth power delivery and fuel efficiency.
- Performance Variants:
- Available in multiple outputs, including Competition Package and CS/CSL trims, each offering distinct tuning.
Common Models Featuring the S55 Engine
The S55 engine powers some of BMW’s most celebrated M models:
- BMW M3 (F80) – 2014 to 2018
- BMW M4 (F82/F83) – 2014 to 2020
- BMW M2 Competition (F87) – 2018 to 2021
- BMW M4 GTS/CSL – High-performance variants with increased power and track-focused upgrades.
Why Choose the BMW S55 Engine?
Performance:
The S55 delivers a blend of raw power and refined handling, making it ideal for spirited driving and track use. With high torque available at low RPMs, it ensures thrilling acceleration.
Reliability:
Engineered for endurance, the S55 features robust components and advanced cooling systems to withstand high performance and demanding conditions.
Versatility:
Its compact design and advanced electronics make it a popular choice for engine swaps, particularly in older BMW models or custom builds.
Where to Buy a BMW S55 Engine
1. Authorized BMW Dealerships
- Offer brand-new or certified rebuilt S55 engines.
- Benefits include warranty coverage and OEM parts.
2. Specialized BMW Performance Shops
- Performance-oriented shops may provide tuned or modified S55 engines.
- Ideal for those looking for upgrades.
3. Online Marketplaces
- Websites like eBay, CarPart.com, or LKQOnline offer used engines at competitive prices.
- Verify the seller’s reputation and request detailed history before purchase.
4. Salvage Yards
- Salvage or junkyards may have S55 engines from totaled vehicles.
- These are often cost-effective but require thorough inspection.
5. Tuning and Racing Communities
- BMW enthusiast forums and Facebook groups often have listings from trusted sellers.
Pricing of BMW S55 Engines
The cost of an S55 engine varies widely based on condition, mileage, and source:
- New Engines: $15,000 to $25,000 (depending on the trim and inclusions).
- Used Engines: $8,000 to $15,000 (higher mileage units fall on the lower end).
- Rebuilt Engines: $10,000 to $18,000 (includes new parts and refinishing).
FAQs About the BMW S55 Engine
Q1: Is the S55 engine reliable?
Yes, the S55 is renowned for its durability and reliability when properly maintained. Regular oil changes, timely servicing, and avoiding excessive tuning without proper support are key to its longevity.
Q2: Can I swap the S55 into an older BMW model?
Yes, the S55 is a popular choice for engine swaps. However, such swaps require compatible electronics, transmission, and extensive modifications to integrate properly.
Q3: What is the maintenance cost for the S55 engine?
Maintenance costs are higher than non-M engines. Expect to pay:
- Oil changes: $150–$250
- Spark plug replacements: $400–$600
- Cooling system service: $300–$800
Q4: How can I ensure the quality of a used S55 engine?
Always request:
- Maintenance records
- Engine compression test results
- Vehicle history, if possible
- Inspection by a trusted mechanic
Q5: Can the S55 handle high-performance modifications?
Yes, the S55 is highly modifiable. With upgraded turbochargers, intercoolers, and fueling systems, it can exceed 700 hp. However, this requires additional support such as stronger internals.
Q6: What are the common issues with the S55 engine?
While generally reliable, common issues include:
- High-pressure fuel pump (HPFP) failure
- Carbon buildup on intake valves (direct injection-related)
- Turbocharger wear in high-mileage units
Q7: What is the warranty on a new or rebuilt S55 engine?
BMW dealerships typically offer a 2-year warranty on new engines. Rebuilt engines from third-party vendors may come with 1-year limited warranties.
Q8: What vehicles can the S55 engine fit into besides BMW M models?
While designed for BMW M models, the S55 can be adapted for use in other vehicles, including non-M BMWs and custom builds, with sufficient expertise.
Conclusion
The BMW S55 engine is a top-tier choice for anyone seeking unmatched performance and reliability. Whether you’re replacing, upgrading, or customizing, it’s crucial to source your engine from a reputable supplier and ensure it fits your needs. By understanding the specifications, pricing, and maintenance requirements, you can make an informed decision and enjoy the exceptional driving experience the S55 delivers.
