Welcome to 603 Auto Salvage, We Sell Quality Used Auto Parts at Affordable prices.
When your 2011 BMW 335i engine needs replacement, finding a quality used engine that maintains BMW’s legendary performance standards while fitting your budget can be challenging. At 603 Auto Salvage, we specialize in providing premium used 2011 BMW 335i engines that deliver the turbocharged performance and German engineering excellence you expect from your luxury sports sedan. Our carefully inspected and tested engines offer substantial savings over dealership prices while maintaining the reliability and power that make the 335i a driver’s favorite.
The 2011 BMW 335i represents a transitional year in BMW’s 3-Series lineup, featuring the innovative N55 single-turbo engine that replaced the earlier twin-turbo N54. This advanced 3.0-liter turbocharged inline-six produces impressive power while offering improved reliability and efficiency compared to its predecessor. Whether you’re restoring a cherished 335i or repairing a high-performance daily driver, our quality used engines provide an economical path to maintaining your BMW’s exceptional driving experience.
The 2011 BMW 335i was powered by BMW’s revolutionary N55 engine, a significant evolution of the company’s turbocharged inline-six technology. This engine represented BMW’s commitment to combining high performance with improved efficiency and reduced complexity.
| Specification | Details |
|---|---|
| Engine Code | N55B30M0 |
| Displacement | 3.0 Liters (2979 cc) |
| Configuration | Inline-6 DOHC Turbo |
| Horsepower | 300 hp @ 5800 RPM |
| Torque | 300 lb-ft @ 1200-5000 RPM |
| Compression Ratio | 10.2:1 |
| Fuel System | High-Pressure Direct Injection |
| Turbocharger | Single Twin-Scroll |
| Recommended Fuel | 91+ Octane Premium |
The N55 engine introduced several technological advances over the previous N54 twin-turbo design. The most significant change was the adoption of a single twin-scroll turbocharger, which simplified the design while maintaining excellent performance characteristics. This single turbo setup reduced the number of potential failure points while providing more immediate boost response across the RPM range.
Advanced Fuel Injection System: The N55 features BMW’s third-generation high-pressure direct injection system, operating at pressures up to 200 bar. This precise fuel delivery contributes to both performance and efficiency, allowing the engine to produce substantial power while meeting stringent emissions standards.
Variable Valve Timing: BMW’s Double-VANOS system continuously adjusts both intake and exhaust cam timing for optimal performance across all operating conditions. This technology helps deliver the engine’s impressive torque curve that remains flat from 1200 to 5000 RPM.
Lightweight Construction: The N55 block is constructed from lightweight aluminum with cast-iron cylinder liners, reducing weight while maintaining durability. The aluminum construction also helps with heat dissipation, crucial for turbocharged engines operating under high loads.
Purchasing a used BMW engine requires careful consideration of quality, authenticity, and seller expertise. At 603 Auto Salvage, we understand the specific requirements and expectations of BMW owners, and we’ve developed specialized processes to ensure our 2011 BMW 335i engines meet these demanding standards.
BMW-Specific Expertise: Our technicians have extensive experience with BMW engines and understand the unique characteristics and common issues associated with the N55 powerplant. This knowledge ensures proper evaluation and preparation of each engine.
Comprehensive Testing Protocol: Every 2011 BMW 335i engine undergoes rigorous testing including compression checks, turbocharger inspection, oil pressure verification, and electronic component testing. We verify that all engine management sensors and actuators function properly.
Documented Provenance: We maintain detailed records of each engine’s history, including mileage verification, maintenance records when available, and the circumstances that brought the donor vehicle to our facility. This documentation helps ensure you receive an engine with a known background.
Quality Assurance Standards: Our quality control process specifically addresses common BMW engine concerns, including carbon buildup inspection, turbocharger condition assessment, and verification of critical engine management components.
While the N55 engine represented a significant improvement over its predecessor, certain issues can develop over time or under specific operating conditions. Understanding these potential problems helps you make informed decisions about maintenance and replacement.
Turbocharger Wastegate Problems: The N55’s turbocharger wastegate can develop issues over time, leading to overboost or underboost conditions. Symptoms include reduced power, check engine lights, and unusual turbocharger noises. Our engines undergo turbocharger testing to verify proper wastegate operation.
Charge Pipe Failures: The plastic charge pipes in the intercooler system can crack or develop leaks, causing boost loss and reduced performance. While not technically an engine issue, this common problem affects overall performance and is checked during our inspection process.
Diverter Valve Problems: The turbocharger diverter valve (also called bypass valve) can fail, causing sharp pressure releases that sound like chattering or rapid popping. Our testing includes verification of proper diverter valve operation.
High-Pressure Fuel Pump (HPFP) Failures: The high-pressure fuel pump can fail, causing reduced power, rough running, and potential engine damage. Early N55 engines were more prone to this issue, but later production units had improved pumps. Our engines are tested for proper fuel pressure delivery.
Carbon Buildup on Intake Valves: Direct injection engines are prone to carbon buildup on intake valves since fuel doesn’t wash over them. This buildup can cause rough idle, reduced power, and increased fuel consumption. Our preparation process includes carbon cleaning when necessary.
Injector Issues: The high-pressure fuel injectors can develop problems over time, causing misfires, rough running, and emissions issues. We test injector operation and replace problematic units as needed.
Water Pump Failures: BMW’s electric water pump can fail, leading to overheating and potential engine damage. While more reliable than earlier designs, these pumps still require periodic replacement. Our engines include inspection of cooling system components.
Thermostat Problems: The engine thermostat can stick open or closed, affecting engine temperature regulation and fuel economy. Proper thermostat operation is verified during our testing process.
Oil Filter Housing Gasket Leaks: The oil filter housing gasket is prone to leaking, causing oil loss and potential engine damage if not addressed. This common BMW issue is inspected and repaired as necessary on our engines.
The 2011 BMW 335i engine delivers exceptional performance that has made it a favorite among driving enthusiasts. Understanding the engine’s characteristics helps set proper expectations for your replacement unit.
The N55 engine’s standout feature is its remarkably flat torque curve, delivering 300 lb-ft of torque from just 1200 RPM all the way to 5000 RPM. This broad torque band provides strong acceleration from low speeds while maintaining power throughout the rev range.
Peak horsepower of 300 hp arrives at 5800 RPM, providing strong high-RPM performance for highway passing and spirited driving. The single twin-scroll turbocharger provides more immediate boost response compared to traditional single-scroll designs, reducing turbo lag and improving throttle response.
With the N55 engine, the 2011 BMW 335i accelerates from 0-60 mph in approximately 5.4 seconds with the manual transmission, or 5.6 seconds with the automatic. This performance places it firmly in sports car territory while maintaining the practicality of a luxury sedan.
The engine’s broad torque curve means strong in-gear acceleration, making highway passing effortless and city driving enjoyable. The power delivery is smooth and progressive, without the abrupt on/off characteristics sometimes associated with turbocharged engines.
Despite its impressive performance, the N55 engine delivers reasonable fuel economy for its class. EPA ratings for the 2011 335i were:
| Transmission | City MPG | Highway MPG | Combined MPG |
|---|---|---|---|
| 6-Speed Manual | 18 | 28 | 22 |
| 8-Speed Automatic | 19 | 29 | 23 |
Real-world fuel economy varies significantly based on driving style, with conservative driving yielding numbers close to EPA estimates, while spirited driving can reduce economy considerably.
Installing a replacement 2011 BMW 335i engine requires specialized knowledge of BMW systems and procedures. The N55 engine integrates closely with various vehicle systems, making professional installation essential for proper operation.
The N55 engine relies heavily on electronic control systems that must be properly configured for your specific vehicle. Key considerations include:
Several components typically require transfer from your original engine or replacement during installation:
The N55 engine requires specific fluids for optimal performance and longevity:
| Fluid Type | Specification | Capacity |
|---|---|---|
| Engine Oil | BMW LL-01 or LL-04 | 6.9 quarts |
| Coolant | BMW Coolant or equivalent | 8.5 quarts |
| Transmission Fluid | BMW ATF (automatic only) | 7.5 quarts |
Using the correct fluids is crucial for engine longevity, particularly the engine oil specification which is designed to work with BMW’s extended service intervals.
At 603 Auto Salvage, our pricing for 2011 BMW 335i engines reflects the premium nature of BMW components while providing substantial savings over dealership alternatives. Our warranty coverage is designed to provide peace of mind for this significant investment.
| Mileage Range | Price Range | Warranty Period |
|---|---|---|
| 40,000 – 65,000 miles | $4,800 – $5,800 | 6 months / 6,000 miles |
| 65,000 – 90,000 miles | $4,200 – $4,800 | 4 months / 4,000 miles |
| 90,000 – 115,000 miles | $3,600 – $4,200 | 3 months / 3,000 miles |
| 115,000+ miles | $3,200 – $3,600 | 30 days / 1,000 miles |
All warranties cover major internal engine components including the block, heads, pistons, connecting rods, crankshaft, and camshafts. Turbocharger coverage is included, reflecting the importance of this component to the engine’s operation.
Extended warranty options are available for customers seeking additional coverage. Our warranties are backed by our reputation and commitment to customer satisfaction.
Proper maintenance is critical for maximizing the life and performance of your replacement BMW 335i engine. The N55 engine, while reliable, requires attention to specific maintenance items to ensure longevity.
The N55 engine uses BMW’s Condition Based Service (CBS) system to determine oil change intervals, typically extending to 10,000-15,000 miles under ideal conditions. However, many BMW specialists recommend more frequent changes:
Use only oils meeting BMW LL-01 or LL-04 specifications. Popular choices include BMW’s own oil, Mobil 1 0W-40, or Castrol TWS 10W-60 for high-performance applications.
The BMW cooling system requires regular attention to prevent overheating and engine damage:
The high-pressure direct injection system requires quality fuel and occasional cleaning:
Proper turbocharger care extends engine life significantly:
The complexity of modern BMW engines makes professional installation essential. 603 Auto Salvage works with certified BMW specialists throughout New Hampshire and surrounding areas who have the expertise and equipment necessary for proper N55 engine installation.
BMW engine installation requires specific tools and diagnostic equipment:
Professional BMW 335i engine installation typically requires:
Mark’s Track Day Special: Mark’s 2011 335i with 89,000 miles suffered catastrophic engine failure during a track day event. Our 67,000-mile replacement N55 engine not only restored his car but actually improved performance thanks to the lower mileage. Six months later, he’s back to enjoying track events with complete confidence.
Sarah’s Daily Driver: Sarah’s high-mileage 335i developed the dreaded high-pressure fuel pump failure, followed by additional internal damage. Rather than face a $12,000 dealer repair estimate, she chose our 94,000-mile replacement engine. The installation cost less than half the dealer estimate, and her car now runs better than it had in years.
Tom’s Restoration Project: Tom was restoring a 2011 335i that had been sitting for several years with engine problems. Our 73,000-mile engine provided the foundation for a complete restoration that brought the car back to like-new condition while staying within his project budget.
Q: How can I verify that a replacement engine is actually from a 2011 335i?
A: The engine code N55B30M0 should be stamped on the engine block. We provide documentation including VIN verification and engine code confirmation with every engine.
Q: Will a 2011 N55 engine work in other BMW models?
A: The N55 was used in various BMW models, but specific configurations and engine management programming vary by application. We recommend staying with the same model year and variant for best compatibility.
Q: What’s the difference between the N54 and N55 engines?
A: The N55 uses a single twin-scroll turbocharger versus the N54’s twin turbos, generally offering better reliability and simpler maintenance while maintaining similar performance.
Q: Do you include the turbocharger with the engine?
A: Yes, our complete N55 engines include the integrated turbocharger system. We test turbocharger operation as part of our quality control process.
Q: What additional parts should I replace during installation?
A: We typically recommend new spark plugs, oil filter, air filter, and often engine mounts. Your installer can provide specific recommendations based on your vehicle’s condition.
Q: How long do N55 engines typically last?
A: With proper maintenance, N55 engines regularly exceed 150,000-200,000 miles. The key is following BMW’s maintenance requirements and addressing issues promptly.
Many BMW enthusiasts are interested in the modification potential of their replacement engine. The N55 responds well to certain modifications while requiring careful consideration of others.
ECU Tuning: The N55 responds exceptionally well to electronic tuning, with gains of 50-80 horsepower possible with proper tuning. Popular options include MHD, bootmod3, and professional dyno tuning.
Intake Systems: Cold air intakes can provide modest power gains and improved engine sound. However, the factory airbox is quite efficient, so gains are typically small.
Intercooler Upgrades: Larger intercoolers reduce intake air temperatures under sustained high load, beneficial for track use or aggressive tuning.
Downpipe Installation: High-flow downpipes can improve exhaust flow and work synergistically with ECU tuning for significant power gains.
When modifying your replacement N55 engine, consider:
Choosing a quality used 2011 BMW 335i engine from 603 Auto Salvage supports environmental sustainability while providing economic benefits. The automotive industry has a significant environmental impact, and extending the useful life of existing components helps reduce this impact.
Manufacturing a new BMW engine requires substantial resources including rare earth metals for turbochargers, aluminum for engine blocks, and energy-intensive manufacturing processes. By selecting a used engine, you’re participating in the circular economy and reducing demand for new production.
Our recycling programs ensure that unusable components are properly processed for material recovery rather than contributing to landfill waste. This comprehensive approach to automotive recycling supports sustainable practices throughout the industry.
Don’t let engine problems end your relationship with your 2011 BMW 335i. At 603 Auto Salvage, we understand the passion that BMW owners have for their vehicles, and we’re committed to providing the quality used engines and expertise necessary to keep these exceptional cars on the road.
Our 2011 BMW 335i engines represent the perfect combination of German engineering excellence and American value. Each engine undergoes our comprehensive testing and preparation process to ensure it meets the performance and reliability standards you expect from BMW.
Call us today at (603) 392-7313 to discuss your 2011 BMW 335i engine needs. Our knowledgeable staff understands BMW engines and can help you select the right unit for your specific requirements and budget. We can also coordinate professional installation through our network of BMW specialists.
Visit our facility to see the quality and attention to detail that sets 603 Auto Salvage apart from other salvage yards. We’re open Monday through Friday from 8:00 AM to 5:00 PM, and Saturday from 8:00 AM to 2:00 PM. Special arrangements can be made for serious BMW enthusiasts who want to inspect engines outside regular hours.
At 603 Auto Salvage, we believe that quality used engines can provide years of reliable service when properly selected and installed. Our commitment to BMW excellence, combined with our customer service standards, makes us the preferred choice for discerning BMW owners throughout New England.
Contact us today and discover why BMW enthusiasts trust 603 Auto Salvage when they need quality used engines. Whether you’re restoring a cherished 335i or maintaining your daily driver, we have the expertise and inventory to help you achieve your goals affordably and reliably.
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