Premium Bentley V8 Engine for Sale | OEM Used Bentley 4.0 Liter

Description

About the Bentley V8 Engine

Looking for a replacement Bentley V8 engine? Part Nests sources OEM used Bentley 4.0L twin-turbocharged V8 engines for the prestigious Bentley Continental GT V8, Continental Flying Spur V8, Bentayga V8 SUV, and some Mulsanne applications. The Bentley V8 is the modern V8 powertrain option in Bentley’s lineup as the alternative to the W12 (per our listing), introduced in 2012 to provide a more efficient and lighter alternative to the larger W12. The 4.0L V8 is based on the Volkswagen-Audi-Bentley shared 4.0 TFSI V8 architecture (also used in Audi S6 / S7 / S8 / RS6 / RS7 and Porsche Panamera Turbo applications) but tuned and refined to Bentley’s standards with hot-V twin-turbocharger placement, direct injection, and cylinder deactivation technology.

Engine Overview: Bentley V8 Architecture

• Displacement: 4.0 liters (3,993 cc)
• Configuration: V8 (two banks of 4 cylinders at 90 degrees)
• Power Output: 500-550 HP depending on year and application (Bentley V8 has been tuned across various outputs)
• Peak Torque: 487-568 lb-ft depending on year and application
• Cylinder Head: Aluminum, DOHC per bank with variable valve timing
• Block: Aluminum
• Forced induction: Twin-turbocharger with HOT-V CONFIGURATION (turbos placed inside V valley between cylinder banks for compact packaging and reduced lag)
• Fuel System: Direct injection (TFSI – Turbo Fuel Stratified Injection)
• Compression Ratio: Approximately 10.1:1 (high for a turbo, possible due to direct injection)
• Cylinder deactivation: AVS (Audi Valvelift System) or COD (Cylinder On Demand) deactivates 4 of 8 cylinders at light load for fuel economy
• Timing drive: Timing chain
• Production: Approximately 2012 plus across Bentley applications
• Origin: Volkswagen-Audi-Bentley 4.0 TFSI V8 architecture; Bentley-specific tune and refinement

Volkswagen Group 4.0 TFSI V8 Architecture

The Bentley V8 (this listing) is based on the broader Volkswagen Group 4.0 TFSI V8 architecture used across multiple performance applications:

• Audi S6 / S7 (2012 plus): 420-450 HP versions of the same 4.0 TFSI V8
• Audi S8 (2012 plus): 520 HP version
• Audi RS6 / RS7 (2013 plus): 560-605 HP performance variant
• Porsche Panamera Turbo (2014 plus, 970/971 generation): 500-550 HP Porsche tune of the 4.0 V8
• Bentley Continental GT V8 / Flying Spur V8 / Bentayga V8 (this listing context): 500-550 HP Bentley tune
• Lamborghini Urus (2018 plus): 641 HP Lamborghini tune of the same base 4.0 V8
• Shared architecture, different tunes: All these applications share the base 4.0 TFSI V8 architecture but with substantially different ECU calibrations, turbocharger specifications, and accessory drives; cross-application requires careful verification

Hot-V Twin-Turbocharger Configuration

One of the defining technical features of the Bentley V8 (and the broader 4.0 TFSI V8 family) is the hot-V twin-turbocharger configuration:

• Hot-V meaning: The twin-turbochargers are placed INSIDE the V valley between the two cylinder banks, rather than the conventional placement OUTSIDE the cylinder banks
• Compact packaging: Hot-V allows substantially more compact engine packaging, important for the modern engine bay constraints in luxury applications
• Reduced turbo lag: The shorter exhaust path from cylinder head to turbocharger reduces turbo lag
• Heat management challenge: Hot-V configuration creates thermal management challenges; sophisticated heat shielding and cooling routing required
• Heritage: Hot-V configuration has been adopted by multiple manufacturers (BMW, Mercedes-AMG, Audi) for modern turbo V8 applications; the 4.0 TFSI V8 is a notable Volkswagen Group example

Bentley V8 Applications

• Bentley Continental GT V8 (2012 plus): V8 alternative to the Continental GT W12; Bentley’s grand touring coupe with the V8 powertrain
• Bentley Continental Flying Spur V8 (2013 plus): Sedan version with V8 powertrain
• Bentley Continental GT V8 S (special editions): Higher-tune V8 variants
• Bentley Bentayga V8 (2018 plus): V8 alternative to the Bentayga W12; SUV application
• Bentley Mulsanne (some variants): Most Mulsanne variants used Bentley’s 6.75L V8 (a separate engine); some Mulsanne variants used the 4.0L V8
• Production transitions: Bentley has increasingly transitioned to V8 (this listing’s engine) and hybrid powertrains as alternatives to and replacements for the larger W12

Bentley V8 vs Bentley W12 Comparison

For buyers considering the Bentley V8 (this listing) vs the Bentley W12 (per our listing):

• Power: V8 500-550 HP vs W12 552-626 HP (W12 has higher peak power across most generations)
• Torque: V8 487-568 lb-ft vs W12 479-664 lb-ft (W12 generally higher torque)
• Weight: V8 substantially lighter than W12, improving vehicle balance and dynamics
• Fuel economy: V8 better fuel economy than W12, especially with cylinder deactivation
• Engineering complexity: V8 conventional architecture is somewhat simpler than W12 W configuration
• Sound character: V8 has classic V8 sound character; W12 has unique W12 sound
• Cost: V8 typically positioned at lower price point than equivalent W12 variant
• Aftermarket and service: V8 architecture is shared with more Volkswagen Group applications, potentially providing slightly better parts availability than the more exclusive W12

Common Bentley V8 Failure Modes

• Direct injection carbon buildup: Standard direct-injection pattern requiring walnut shell blasting service every 60,000-100,000 miles
• HPDI high-pressure fuel pump failure: Mechanical HPDI fuel pump can fail; documented across the 4.0 TFSI V8 family
• Turbocharger wear at high mileage: Twin-turbocharger system can experience wear; turbo bearing wear documented at 80,000-120,000 plus miles
• AVS / COD cylinder deactivation issues: The cylinder deactivation system can develop issues affecting deactivated cylinder operation
• Timing chain tensioner wear: The 4.0 TFSI V8 has documented timing chain tensioner issues; chain rattle at startup is the warning sign
• Oil consumption: Some examples exhibit elevated oil consumption
• Coolant routing complexity: The hot-V configuration creates complex cooling routing with multiple potential leak points
• Heat shielding wear: Hot-V heat shields can wear at high mileage

Luxury Engine Context

The Bentley V8 (this listing) is one of several modern luxury engines in our catalog. The Bentley W12 engine (our listing) is the W12 powertrain alternative in the same Bentley vehicles. The Audi S5 V8 engine (our listing) is the related Volkswagen-Audi 4.2 FSI V8 (an earlier Volkswagen Group V8 architecture distinct from the 4.0 TFSI V8 used in the Bentley V8) – both are Volkswagen Group V8 architectures but represent different engine families and generations. Audi A/C system parts cluster for various Audi applications is covered by our, and listings.

Vehicle Compatibility

Why Buy From Part Nests

• Engine verified as Bentley 4.0L V8 (Volkswagen-Audi-Bentley shared 4.0 TFSI V8 architecture in Bentley-specific tune)
• Year and generation confirmed (4.0L V8 production approximately 2012 plus across Bentley applications)
• Application confirmed (Bentley Continental GT V8, Continental Flying Spur V8, Bentayga V8, some Mulsanne variants)
• Horsepower rating documented (500-550 HP varying by application and year)
• Compression and leak-down tested all 8 cylinders
• Both cylinder banks condition documented (V8 has 2 banks of 4 cylinders)
• Twin-turbocharger condition assessed (hot-V configuration with turbos inside V valley)
• Direct injection system documented
• Cylinder deactivation system documented (4 of 8 cylinders deactivate at light load)
• Specialty heavy freight to all 50 states
• 15 day replacement warranty on internal defects
• Luxury engine experience and Volkswagen Group 4.0 TFSI V8 architecture knowledge from our support team
• Call (855) 634-4447 for fitment confirmation and to lock in your order.