Dedicated Subsystem WorkbenchPlatform Gen: 2018–2026
2021 Ducati Panigale V4 / V4 S / V4 R / V4 SP Charging System, Stator AC Output & Battery Health
Stator 3-phase AC voltage at 5,000 RPM, coil resistance, regulated DC voltage, battery code YT12B-BS (12V 10Ah) / Lithium-Ion (12V 4Ah, OEM 66920031A on V4 S / SP / R), CCA rating, and multimeter charging diagnostic steps for 2021 Ducati Panigale V4 / V4 S / V4 R / V4 SP.
Gen 2018–2026
Factory Platform Compatibility: All workshop fluid capacities, maintenance milestones, torque specifications, and consumables on this specification sheet are factory-identical across model years 2018 through 2026.
3-Phase Charging System & Battery Diagnostic Flowchart
Yuasa & OEM StandardsMultimeter troubleshooting protocols, cold cranking amps (CCA) ratings, 3-phase stator AC outputs, and regulator-rectifier health verification.
OEM Battery Code
YT12B-BS (12V 10Ah) / Lithium-Ion (12V 4Ah, OEM 66920031A on V4 S / SP / R)
Cold Cranking Rating
Not Available
Capacity (10HR Rate)
Not Available
Regulated Output Spec
Key-OFF Parasitic Limit
V DC
Multimeter Test Diagnosis
Enter your multimeter terminal reading on the left to view instant diagnostic interpretations and recommended workshop actions.
OEM Factory AGM BatteryOEM Replacement
Dimensions: • Weight: Not Available. Pre-filled absorbed glass mat technology engineered for heavy vibration resistance.
Lithium LiFePO4 UpgradeUp to 70% Lighter
Features built-in RE-START jump starting reserve. Never stranded by dead lights: press the restart button on the top terminal to crank the motorcycle without jumper cables.
Smart Maintainer SpecBattery Life Extension
Standard Charge Rate: . Automated desulfation & float maintenance ensures full capacity retention during off-season winter storage.
Recommended Parts: •
IGNITION ENGINEERING, HEAT-RANGES & COMBUSTION DIAGNOSTICS
OEM Spark Plugs • Heat-Range Dissipation • Coil Resistance • Visual Combustion Reading Matrix
FACTORY CERTIFIED SPECIFICATIONS
Factory Standard Plug
NGK SILMAR9B9
4 Plugs (Desmosedici Stradale V4)
Electrode Spark Gap
0.8 - 0.9 mm (0.031 - 0.035 in)
M10 x 1.0 • 26.5 mm Reach
Hex Drive & Socket Spec
14 mm Bi-Hex (Thin-Wall)
Use magnetic rubber-insert thin socket
Tightening Torque (NM)
12 N·m
1/2 turn after finger seat (gasket crush)
Stick Coil Resistances
Pri: 0.75 - 1.05 Ω at 20°C
Sec: 9.2 - 12.0 kΩ at 20°C
Service & Replacement
Inspect: 7,500 miles (12,000 km)
Replace: 15,000 miles (24,000 km)
SPARK PLUG HEAT-RANGE & METALLURGY SELECTOR
Compare OEM standard, fine-wire precious metals, and ambient/duty cycle thermal dissipation paths
Verified Part Specification
NGK SILMAR9B9
Metallurgy & Center Tip Architecture
Copper Core / Solid Nickel Alloy Ground Electrode
Thermal Dissipation Path & Physics
Standard OEM factory thermal dissipation rate. Calibrated to stabilize ceramic nose temperature between 500°C–800°C across mixed street, highway, and mountain riding.
Operating Application Envelope
Stock engines, factory ECU mapping, general commuting, and standard touring. Recommended for all baseline maintenance schedules.
Ignitability & Coil Voltage Demand
Standard spark kernel size. Standard secondary coil demand (~15–20 kV). Solid copper core ensures rapid heat conduction away from tip.
SPARK PLUG READING & COMBUSTION DIAGNOSTICS ANALYZER
Interactive visual diagnosis: Match your ceramic insulator tip and electrodes to detect AFR, timing, oil intrusion, and thermal overload
Normal Clean — Optimal Combustion Equilibrium
OPTIMAL COMBUSTIONThermal Operating Range: 500°C – 800°C (932°F – 1,472°F) • Self-Cleaning Pyrolysis Window
Visual Insulator & Electrode Profile
Ceramic insulator nose is light grayish-tan, beige, or light brown. Firing tip and electrodes are dry with minimal combustion deposits. Ground electrode edges remain crisp without rounding or erosion.
Multimeter Electrical Resistance Test
Insulation Resistance > 10 MΩ (Infinite DC resistance between center terminal and steel shell). Dielectric barrier is pristine; zero spark leakage to cylinder head ground.
Probable Root Causes
- Optimal air/fuel ratio across all throttle positions (stoichiometric 14.7:1 cruise, 12.8:1–13.2:1 power enrichment)
- Correct spark plug heat range precisely matched to engine displacement and cooling efficiency
- Ignition timing and coil dwell saturation within factory parameters
- Healthy piston rings and valve guide seals with minimal oil blow-by
Prescribed Workshop Remediation Action
No mechanical intervention required. Inspect gap with wire-style feeler gauge and reinstall to factory torque specification.
Coil-on-Plug (COP) / Stick Coil Multimeter Bench Testing Protocol
Step 1 • Primary Circuit
Set DMM to lowest Ω range. Probe between Terminal 1 (+12V switched) and Terminal 2 (ECU trigger pin). Normal reading: 0.75 - 1.05 Ω at 20°C at 20°C.
Step 2 • Secondary Circuit
Set DMM to kΩ range. Probe between Terminal 1 and the high-voltage spark plug spring terminal inside the boot. Factory spec: 9.2 - 12.0 kΩ at 20°C at 20°C.
Step 3 • Dielectric Boot Inspection
Flex silicone boot under bright light. Check for pinholes, white powdery dielectric breakdown tracks, or hardened silicone causing high-voltage flashover to the cylinder head spark plug tube.
Direct-Fit Ignition Components & Workshop Sockets
Authentic laser iridium plugs, thin-wall magnetic sockets, and OEM replacement stick coils
Ducati Diagnostic Fault Codes & Multimeter Bench Testing
FI & OBD2 DecoderAuthentic factory ECU fault codes, sensor resistance specifications, and harness pinout troubleshooting.
Code P0105Manifold Absolute Pressure (MAP)
Intake pressure sensor signal out of range or open circuit.
Test: 5.0V VRef at pin 1; 2.8-3.1V at sea level ambient key-on.
Code P0115Engine Coolant Temp (ECT)
Coolant temperature sensor circuit open or shorted to ground.
Test: Measure NTC thermistor: ~2.5 kΩ at 20°C (68°F), 300 Ω at 80°C (176°F).
Code P0335Crankshaft Position (Pick-Up) Sensor
Zero sync timing pulses detected from CPS during starter cranking.
Test: Measure VR inductive pickup coil: 680-850 Ω across connector pins.
Code P1115Ride-by-Wire Throttle Grip (APS)
APS potentiometer tracks 1 & 2 correlation error.
Test: Track 1: 0.7-4.2V; Track 2: 0.35-2.1V (Track 1 = 2x Track 2 ratio).
Code P1600CAN Bus Line / BBS Comm Malfunction
Black Box System / Dashboard / ECU bus-off communication error.
Test: Measure 60 Ω CAN termination resistance between CAN-H and CAN-L with key off.
Looking for other error codes, sensor pinouts, or OBD2/Euro 5 codes?
OEM Workshop Archives
5 Documented BulletinsOfficial Factory Service Bulletins & Field Updates
Bulletin #SRV-RCL-25-002Safety Recall 25V-570: Panigale V4 & Streetfighter V4 Single-Sided Swingarm Rear Wheel Axle Shaft Replacement
Source: RCLRPT-25V570-3457.pdfMandated Torques:Rear Wheel Collar Nut (M48x1.5): 230 N·m ± 5% (55mm 12-point socket, Shell Retinax HD2 grease)Eccentric Hub Pinch Clamp Screws (2x M12): 35 N·m ± 5% (1-2-1 alternating sequence)Rear Sprocket Cush Drive Nuts (6x M10x1.25): 48 N·m ± 5% (Loctite 243)Rear Brake Rotor Screws (4x M8x20): 25 N·m ± 5% (Loctite 270)
Consumable Specs:Shell Retinax HD2 or Gadus high-load axle greaseLoctite 243 medium-strength threadlockerLoctite 270 high-strength threadlocker
Genuine Part Numbers:81920831AA (Recalled Rear Wheel Shaft)81920611A (Recalled Rear Axle Assembly)81920951AA (Countermeasure Rear Wheel Shaft)75010071E (M48x1.5 Wheel Collar Nut)85210571A (Conical Belleville Spring Washer)75990081A (Safety Circlip Hairpin Pin)
NHTSA Recall 25V-570Ducati Campaign SRV-RCL-25-002
Ducati Panigale V4 / Streetfighter V4 Single-Sided Swingarm Rear Wheel Axle Shaft
Structural integrity recall: Replacement of rear wheel shaft (81920831AA / 81920611A), notch effect mitigation, M48 collar nut 230 N·m & eccentric clamp 35 N·m.
Critical Safety CampaignM48 Nut 230 N·m / Eccentric 35 N·m
Genuine Part Numbers:81920831AA81920611A81920951AA75010071E
NHTSA Safety Campaign 25V-570 / Ducati SRV-RCL-25-002Desmosedici Stradale / Single-Sided Swingarm Platform
Bulletin #SRV-RCL-18-006Safety Recall 18V-834 / CR167: Panigale V4 Oil Cooler Output Port Welded Reinforcement & Hose Fittings
Source: RCRIT-18V834-1259.pdfMandated Torques:Oil Cooler Delivery & Return Hose Nuts: 15 N·m ± 10% (24mm open crowfoot socket adapter)Oil Cooler Radiator Duct Stud Nuts (2x M6): 5 N·m ± 10%Lower Half-Fairing Screws (M5x14): 4 N·m ± 10%
Consumable Specs:Shell Advance 4T Ultra 15W-50 (0.42 L top-up quantity)Klüberplus S 06/100 rubber vibration isolator assembly lubricantClean engine oil for Viton O-rings
Genuine Part Numbers:54811364A (Countermeasure Oil Cooler with Welded Gusset Plates)88641321A (Viton Fluoroelastomer O-Ring Seals, 4x)71314901A (Vibration Damper Spacers with Collar, 2x)
NHTSA Recall 18V-834Ducati Campaign SRV-RCL-18-006 / CR167
Ducati Panigale V4 Oil Cooler Output Port Reinforcement & Hose Fittings
Countermeasure cooler (54811364A) with dual welded port reinforcement plates, 24mm union nuts 15 N·m, duct mounts 5 N·m & 0.42L top-up.
Thermal Reliability UpdateHose Unions 15 N·m / Mounts 5 N·m
Recall Countermeasure Kit:54811364A88641321A71314901A
NHTSA Safety Campaign 18V-834 / Ducati SRV-RCL-18-006 / CR167Panigale V4 / V4 S / V4 Speciale (2018–2019)
Bulletin #SRV-RCL-18-008Safety Recall 18V-854 / CR169: Desmosedici Stradale Hydraulic Timing Chain Tensioner Torque Revision
Source: RCRIT-18V854-6810.pdfMandated Torques:Front Bank Hydraulic Chain Tensioner: 50 N·m ± 5% (27mm 12-point box socket, revised from 30 Nm)Rear Bank Hydraulic Chain Tensioner: 50 N·m ± 5% (27mm 12-point box socket, revised from 30 Nm)Left Fairing Puller Screws (M5x12): 5 N·m ± 10%
Consumable Specs:None (dry threads; interference crush washer A seated on tensioner body)
Genuine Part Numbers:42610491A (Hydraulic Chain Tensioner Assembly with Washer A)Washer A (Interference-fit seal ring; replace complete tensioner if missing)
NHTSA Recall 18V-854Ducati Campaign SRV-RCL-18-008 / CR169
Ducati Desmosedici Stradale Hydraulic Timing Chain Tensioner Sealing
Front and rear bank hydraulic chain tensioner torque revision: 50 N·m (increased from 30 N·m), 27mm 12-point socket & washer inspection.
Torque Revision Campaign50 N·m (27mm Box Socket)
NHTSA Safety Campaign 18V-854 / Ducati SRV-RCL-18-008 / CR169Desmosedici Stradale V4 1103cc / 998cc Platform
Bulletin #SRV-RCL-19-001Safety Recall 19V-382 & 18V-238 / CR177: Panigale V4 Fuel Tank Filler Cap Venting System & Check Ball Deletion
Source: RCSB-19V382-9239.pdfMandated Torques:Valve Block Fastening Screws (2x Torx T10): 0.9 N·mFiller Plug Outer Ring Screws (4x M5x16): 4 N·m ± 10%Fuel Tank Front Pivot Screw (M6x20): 10 N·m ± 10%
Consumable Specs:None
Genuine Part Numbers:43314761A (Fuel Tank Warning Decal: Fuel spray may cause injury, Open slowly)43314751A (Owner's Manual Rider Handbook Addendum Page)Check Ball 7 (Permanently extracted and deleted from valve chamber)
NHTSA Recall 19V-382 & 18V-238Ducati Campaign SRV-RCL-19-001 / CR177
Ducati Panigale V4 Fuel Tank Filler Cap Venting & Pressure Relief System
Fuel pressurization countermeasure: Valve block check ball removal, Torx T10 0.9 N·m, M5 ring screws 4 N·m & decal 43314761A.
Fuel Safety RecallCap Screws 4 N·m / Valve 0.9 N·m
Campaign Components:43314761A43314751ACheck Ball RemovalDDS 2.0 Global Scan
NHTSA Safety Campaign 19V-382 / 18V-238 / Ducati SRV-RCL-19-001Panigale V4 (all variants 2018–2019)
Bulletin #SRV-RCL-26-001Safety Recall 26V-050: Panigale V4 & Streetfighter V4 Rear Brake Line Heat Shield Protection
Source: RCLRPT-26V050.pdfMandated Torques:Rear Brake Line Banjo Screws: 25 N·m ± 5%Heat Shield Retaining Bracket Screws: 5 N·m ± 10%
Consumable Specs:DOT 4 Brake FluidThermal Shield Reflective Sleeve
Genuine Part Numbers:High-temperature thermal reflective sleeve assemblyCopper crush sealing washers
Explore Other Subsystems for this 2021 Ducati Panigale V4 / V4 S / V4 R / V4 SP
Jump straight into dedicated factory specifications and interactive workshop diagnostic engines.
Subsystem Guide/torques
Fastener Torques
Engine drain plug, axle spindles, caliper mounts, triple clamp pinch bolts & thread lubrication derating guide.
Open Dedicated Workbench →
Subsystem Guide/fluids
Fluids & Capacities
Oil: 3.80 L (4.02 US qt) • Coolant: 2.60 L (2.75 US qt) • Brake: DOT 4 (Brembo HTC 64T / Motul RBF 660 for track)
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Subsystem Guide/fuses-relays
Fuses & Relays
Main: N/A • Location: N/A
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Subsystem Guide/compression
Compression & Leakdown
Ratio: 14.0:1 • Std: 185-235 PSI • Limit: 160 PSI
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Subsystem Guide/valves
Valve Clearances
Intake: N/A mm • Exhaust: N/A mm
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Subsystem Guide/fuel-delivery
Fuel Delivery & TB Sync
Idle: N/A • Rail Pressure: N/A • Vacuum: N/A
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Subsystem Guide/tires
Tires & Gearing
Front: 120/70 ZR17 (Pirelli Diablo Supercorsa SP V3 / V4) • Rear: 200/60 ZR17 (Pirelli Diablo Supercorsa SP V3 / V4)
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Subsystem Guide/suspension
Suspension & Sag
Front Travel: 120 mm • Rear Travel: 130 mm
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Subsystem Guide/maintenance
Maintenance Schedule
Oil: Every 7,500 miles (12,000 km) mi • Valves: N/A • Plugs: Every 15,000 miles (24,000 km) mi
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