🏷️ Basic Information

Make:

Ducati

Model:

ST4S

Year:

2003

Market:

European (Eu)

Product Name:

Ducati Part List ST4S Eu 2003 Parts Manual Parts Manual Catalog

👋 Introduction

Motorcycle Segment:

Sport-Touring

Target Audience:

Owners and technicians seeking to identify and order genuine Ducati parts for maintenance and repair.

Key Competitors Model Year:

Honda VFR800, BMW R1100S, Kawasaki GTR1000, Yamaha FJR1300.

Manual Benefit:

Essential tool for accurate part sourcing, ensuring originality and correct fitment.

Digital Delivery:

Instant download, no physical shipping delays or costs.

Guarantee:

Full Money Back Guarantee.

📋 Manual Details

Primary Coverage:

All mechanical and electrical components of the Ducati ST4S Eu 2003 model.

Component Groups:

Engine, gearbox, frame, suspension, brakes, electrical system, bodywork, fuel system, exhaust system, wheels and tires.

Estimated Pages:

Approximately 300-400 pages (typical for a comprehensive parts catalog).

Type:

Parts Manual / Parts Catalog

Language:

English

File Format:

PDF

📖 Manual Coverage

Engine Assembly:

Detailed breakdown of engine components, including cylinder heads, crankcase, pistons, connecting rods, valves, timing components.

Transmission And Clutch:

Exploded views and part numbers for the gearbox, clutch assembly, and related components.

Fuel System:

Components related to fuel injection, fuel pump, injectors, fuel lines, and fuel tank.

Electrical System:

Diagrams and part numbers for wiring harnesses, ignition system, lighting, starter motor, battery, ECU.

Suspension And Steering:

Components for front forks, rear shock absorber, linkages, and steering head bearings.

Braking System:

Part numbers for brake calipers, master cylinders, brake lines, discs, and pads for both front and rear.

Frame And Chassis:

Components of the main frame, subframe, and associated mounting hardware.

Bodywork And Fairings:

All external body panels, fairings, seat, fuel tank cover, and related fasteners.

Exhaust System:

Part numbers for exhaust headers, catalytic converter (if applicable for Eu spec), mufflers, and clamps.

Wheels And Tires:

Wheel assembly components, bearings, and tire specifications.

Part Identification:

Clear identification of all replaceable parts with corresponding part numbers.

Assembly Disassembly Views:

Exploded diagrams illustrating the correct order and method of assembly and disassembly for various components.

Component Relationships:

Illustrations showing how different parts fit together within a system.

Fastener Specification:

Identification of specific bolts, nuts, washers, and their correct torque values where applicable (though often found in a separate workshop manual).

Maintenance Part Selection:

Facilitates correct part selection for routine maintenance and repairs.

Depth:

Component-level detail for parts ordering and identification.

Diagnostic Support:

Primarily focuses on part identification, not troubleshooting or diagnostic procedures.

Repair Guidance:

Indirectly supports repair by ensuring correct parts are used; detailed repair instructions are typically found in a service manual.

📊 Manual Specifications

Format:

PDF

Searchability:

Typically searchable by text within the PDF, allowing for quick part number or component name lookups.

Quality:

Factory quality, ensuring clear diagrams and legible text.

Readability:

High resolution for clarity of exploded views and part details.

Zoom Functionality:

Yes, allows for detailed examination of diagrams.

Printable:

Yes

Delivery Format:

Digital Download (PDF)

Digital Medium:

Electronic document

⚙️ Engine Specifications

Engine Type:

V-Twin, four-stroke, desmodromic valve actuation.

Displacement:

996 cc (996 cm3)

Bore X Stroke:

98 x 66 mm

Cooling System:

Liquid-cooled

Valvetrain:

4 valves per cylinder, Desmodromic

Horsepower:

Approximately 112 HP (83.5 kW) at 8500 rpm

Torque:

Approximately 99 Nm (73 lb-ft) at 7000 rpm

Fuel Delivery:

Electronic Fuel Injection (EFI) - Marelli or similar.

Fuel Type:

Unleaded gasoline, minimum 95 RON.

Exhaust System:

Dual mufflers, often with catalytic converter for Eu models.

🔧 Transmission

Type:

6-speed manual

Primary Drive:

Helical gears

Final Drive:

O-ring sealed chain

Clutch Type:

Wet, multi-plate, hydraulically operated

📐 Dimensions

Length:

Approx. 2140 mm (84.3 in)

Width:

Approx. 760 mm (29.9 in) (excluding mirrors)

Height:

Approx. 1230 mm (48.4 in) (at seat)

Seat Height:

Approx. 810 mm (31.9 in)

Dry Weight:

Approx. 213 kg (470 lbs)

Wet Weight:

Approx. 230 kg (507 lbs) (with fluids)

Fuel Tank Capacity:

21 liters (5.5 US gal)

🛡️ Safety Features

Safety Standards:

European road legality standards for motorcycles.

Braking System:

Dual 320 mm discs with 4-piston calipers (front), Single 245 mm disc with 2-piston caliper (rear).

ABS:

Not typically standard on this model, but check specific market configurations.

Lighting:

Halogen headlights, LED taillight.

💡 Technology Features

Dashboard:

Analog tachometer and speedometer, LCD multi-function display showing odometer, trip meter, clock, coolant temperature.

Audio System:

Not equipped with a factory-installed audio system.

ABS Availability:

Optional or market-dependent, not a standard feature across all 2003 ST4S models.

Connectivity Features:

No integrated Bluetooth or smartphone connectivity.

🔧 Maintenance

Oil Change:

Every 6,000 - 7,500 km (3,700 - 4,600 miles) or annually, whichever comes first.

Desmo Service:

Every 12,000 km (7,500 miles) - critical for valve clearance adjustment on desmodromic engines.

Spark Plugs:

Replace every 10,000 - 12,000 km (6,200 - 7,500 miles).

Air Filter:

Inspect every 6,000 km (3,700 miles), replace as needed.

Chain And Sprockets:

Lubricate every 500 km (300 miles), adjust tension as needed, replace when worn.

Engine Oil:

Fully synthetic SAE 15W-50, API SG/SH/SJ or higher, JASO MA certified. Ducati recommends specific brands like Shell Advance.

Engine Oil Capacity:

Approximately 3.5 - 3.8 liters (3.7 - 4.0 US qt) with filter change.

Coolant:

Ethylene glycol based coolant, 50% mixture with distilled water. Ducati coolant recommended.

Brake Fluid:

DOT 4, high-temperature brake fluid.

Clutch Fluid:

DOT 4 brake fluid (shared reservoir with front brake).

Desmo Valve Adjustment:

Critical maintenance; neglecting desmo service can lead to serious engine damage. Valve clearances tend to tighten over time.

Regulator Rectifier:

Some early Ducati models (though less common on the ST4S) could experience issues with the regulator rectifier, leading to battery charging problems.

Fuel Pump Reliability:

While generally reliable, fuel pump issues can occur over time, especially with aged fuel or contamination.

Electrical Connections:

Corrosion or loose connections in connectors can sometimes cause intermittent electrical faults.

Cam Belt Replacement:

Crucial maintenance item. Belts should be replaced at recommended intervals (typically every 24,000 km / 15,000 miles or 2 years), as failure can cause catastrophic engine damage.

📚 Vehicle History

Manufacturer:

Ducati Motor Holding S.p.A., Italy.

St Series:

The ST series (Sport Touring) was Ducati's foray into the sport-touring segment, blending performance with longer-distance comfort. The ST4S was an evolution of the ST2 and ST4, featuring the larger, more powerful 996cc engine from the 916/996 range.

St4S Variant:

The 'S' designation typically indicated upgraded components, often including fully adjustable Öhlins suspension (front and rear) and lighter alloy wheels compared to the standard ST4.

Production Years:

The ST4S was produced approximately from 2001 to 2005.

Manufacturing Location:

Bologna, Italy.

🏆 Awards & Recognition

Segment Awards:

While specific awards for the 2003 ST4S are not widely documented, the ST series was generally well-regarded for its blend of Italian performance and practicality in the sport-touring class.

Contemporary Reviews:

Praised for its strong performance derived from the 996 engine, sophisticated chassis, and decent long-distance comfort for a Ducati.

Emissions Compliance:

Euro 2 compliant for the European market.