BHF Audi BHF

4.2-літровий V8 двигун Audi з безпосереднім впорскуванням пального, відомий своєю потужністю та надійністю, але вимагає регулярного обслуговування для запобігання проблемам з ГРМ.

Brand: Audi Type: Petrol Configuration: V8 Production Years: 2003 - 2008 Production: Gyor, Hungary
73 Brand engines
5 Modifications

Technical Specifications

Engine Displacement 4.2 L (4,163 cc)
Configuration V8
Number of Cylinders 8
Valves per Cylinder 5
Power 340 л.с.
Torque 410 Н*м
Cylinder Bore 84.50 mm
Piston Stroke 92.80 mm
Compression Ratio 11.0:1
Firing Order 1-5-4-8-6-3-7-2
Fuel System Direct Injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 7,200 rpm
Max Torque RPM 3,500 rpm
Valve Train DOHC
Timing Drive Chain
Timing Chain Replacement 250000 or as needed
Block Material Aluminum
Head Material Aluminum
Engine Weight 220 kg
Dimensions (L×W×H) null mm
Lubrication System Dry sump
Cooling System Liquid cooling

Additional Information

Engine Family Audi V8 engine
Manufacturing Plant Gyor, Hungary
Predecessor null
Successor CAUA

Maintenance

Engine Oil Capacity 9 L (with filter: 9.5 L)
Recommended Viscosity 5W-40
Oil Standard VW 502 00
Recommended Brands Castrol Edge, Mobil 1, Liqui Moly
Oil Change Interval 15 000 km or 12 mo
Oil Filter 079115561J
Air Filter 077133843A
Replace every 60 000 km
Fuel filter 8E0201511J
Cabin Filter 8E0819439
Spark Plugs Type: Platinum
Part number: 101000063AA
Gap: 0.8 mm
Quantity: 8 pcs
Replace every 60 000 km
Coolant Capacity 12.5 L
Coolant Type G12 (Audi Coolant)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 87°C
Operating Temperature 90°C
Max Operating Temperature 110°C
Critical Temperature 130°C
Annual Maintenance Cost 1000-1500 USD

Reliability

Reliability rating: 7/10

Expected lifespan: 300 000 km

Common problems

Problem Severity Mileage Repair cost
Timing chain tensioner failure High 150000-200000 km $2000-4000
Oil consumption issues Medium 100000-150000 km $500-1000

Known defects

  • High oil consumption
  • Timing chain tensioner issues

Warranty extensions

  • Extended warranty for timing chain issues in some markets

Tuning potential

Tuning potential: Medium | Max. safe power: 500 hp

Stage Power Torque Method Cost
Stage 1 370 hp 440 Nm ECU remap only
Reliability impact: Minimal 		$700
Stage 2 400 hp 470 Nm ECU, Performance Exhaust
Required: Exhaust system, ECU remap
Reliability impact: Low 		$3000
Stage 3 450 hp 500 Nm -
Required: Intake system, Exhaust system, ECU remap
Reliability impact: Medium 		$8000

Popular modifications

  • Cold air intake
  • Performance exhaust
  • ECU remap

Tuning limitations

  • Limited by naturally aspirated design
  • Cooling system upgrades recommended

Cars with the BHF engine

This engine was fitted to 2 models

Photo Brand Model Generation Production years
S4 Audi S4 S4 2003 - 2005
No photo
 Audi RS 4 RS 4 (B5) 1999 - 2001

All modifications (5)

Vehicle Generation Modification Power Gearbox Drive
Audi S4 S4 4.2 V8 344 л.с. 6-МКП 4x4 344 hp 6-МКП 4x4
Audi S4 S4 4.2 V8 344 л.с. 7 S-tronic 4x4 344 hp 7 S-tronic 4x4
Audi S4 S4 4.2 V8 344 л.с. 6-МКП 2WD 344 hp 6-МКП 2WD
Audi RS 4 RS 4 (B5) 4.2 V8 420 л.с. 6-МКП 4x4 420 hp 6-МКП 4x4
Audi RS 4 RS 4 (B5) 4.2 V8 420 л.с. 5-Автомат 4x4 420 hp 5-Автомат 4x4

Interesting Facts

  • The BHF engine was one of the last naturally aspirated V8s in the Audi S4 lineup.
  • Known for its high-revving nature and distinctive sound.

Applications

Total produced: null

Vehicle Generation Years Power Markets
Audi S4 B6/B7 2003-2008 340hp Europe, USA

Compatible transmissions: 6-speed Manual, 6-speed Automatic

Drive types: AWD

Fuel Economy

Fuel Type Petrol 98
Octane Rating Minimum: 95 | Recommended: 98
Consumption (City) 16 L/100km
Consumption (Highway) 9 L/100km
Consumption (Combined) 12 L/100km
Real Consumption 13.5 L/100km
Fuel Tank Capacity 63 L
Range 525 km
Cost per 100 km 20-25 USD

Emissions Standards

Emission Standard Euro 4
CO₂ Emissions 289 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Awards and Recognition

  • null () — null

Comparison with competitors

Engine Brand Displacement Power Torque
M113 Mercedes-Benz 4,966 cc 306 hp 460 Nm
S65 BMW 3,999 cc 414 hp 400 Nm

Pros

  • High-revving engine
  • Distinctive V8 sound
  • Strong performance

Cons

  • High oil consumption
  • Expensive maintenance
  • Timing chain issues