Alternator Rebuild Kit Komatsu w/Cummins B3.3L 101211-2940 C6008611611 - 12771RK-A

Need to rebuild your vehicle's alternator? This premium rebuild component kit is engineered to meet or exceed original factory specs, ensuring a perfect fit and long-lasting charging performance.

🚘 Vehicle Application Details

• Cummins Engines Medium/Heavy Duty Engine:
  • CFP33-F25 L4 3.3L 199cid (2004-2010)
  • CFP33-F35 L4 3.3L 199cid (2004-2010)
• JCB Roller (Static and Vibratory):
  • MV75PD L4 3.9L 239cid 4BT3.9 / Cummins 4BT3.9 (2005-2014)
  • VM46D L4 3.9L 239cid 4BT3.9 / Cummins 4BT3.9 (2003-2014)
  • VM46PD L4 3.9L 239cid 4BT3.9 / Cummins 4BT3.9 (2003-2014)
  • VM75D L4 3.9L 239cid 4BT3.9 / Cummins 4BT3.9 (2005-2014)
  • VM75PD L4 3.9L 239cid 4BT3.9 / Cummins 4BT3.9 (2005-2014)
• Komatsu Forklift:
  • FD35-10 L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD35Y-10 L4 3.3L 199cid / 3260cc S4D95LE-3-CX (2003-2012)
  • FD40-10 L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD40-10-US L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD40Y-10 L4 3.3L 199cid / 3260cc S4D95LE-3-CX (2003-2012)
  • FD40Z-10-US L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD40ZY-10 L4 3.3L 199cid / 3260cc S4D95LE-3-CX (2003-2012)
  • FD45-10 L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD45-10-US L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2008-2014)
  • FD45Y-10 L4 3.3L 199cid / 3260cc S4D95LE-3-CX (2003-2012)
  • FD50A-10 L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2005-2014)
  • FD50A-10-US L4 3.3L 199cid / 3260cc SAA4D95LE-5-CX (2005-2014)
  • FD50AY-10 L4 3.3L 199cid / 3260cc S4D95LE-3-CX (2003-2012)
• Komatsu Wheel Loader:
  • WA100M-5 L4 3.3L 3260cc 199cid S4D95LE-3 (2007-2009)
  • WA65-5 L4 3.3L 3260cc 199cid 4D95LE-3 (2005-2009)
  • WA70-5 L4 3.3L 3260cc 199cid 4D95LE-3 (2005-2009)
  • WA80-5 L4 3.3L 3260cc 199cid 4D95LE-3 (2005-2009)
  • WA90-5 L4 3.3L 3260cc 199cid 4D95LE-3 (2005-2010)
• Massey Ferguson Windrower:
  • WR 9220 L4 3.3L 201cid B3.3 / Cummins B3.3 (2004-2007)
• Mustang Skid Steer Loader:
  • 2066 L4 3.3L 201cid B3.3 / Cummins B3.3 (2004-2012)
  • 2076 L4 3.3L 201cid B3.3 / Cummins B3.3 (2004-2012)
  • 2086 L4 3.3L 201cid B3.3 / Cummins B3.3 (2004-2012)
• Rem Misc. Equipment:
  • 2100D (2004-2009)
• Tug Technologies Aircraft Support Load Lifting Equipment:
  • MA-25 L4 3.3L 201cid B3.3 / Cummins B3.3

🔍 Cross-Reference Alternator Assemblies (Fits These Units)

• Denso OE: 101211-2940, 101211-2941
• Excel OE: 8377
• JCB OE: 721150865
• Komatsu OE: 600-861-1611
• Lester / Other References: 12771

📐 Component-Specific Technical Data

⚡ Voltage Regulator Specs

• Technical Specifications: 12 Volt System, A-Circuit, P-IG-L Terminals, 14.4 Voltage Set Point, 57.5mm Mounting Length, Active Lamp Function with Output, Shorted Field & Lamp Protection
• Design: For Denso IR/IF Alternators
• Replaces OEM: Denso 126000-3480, 126000-3630
• Aftermarket Crossovers: 80904499, 80904495, 230-52129, GNR-N027, 216-050, W085-284, IN348

⚡ Slip Ring Specs

• Dimensions: 8.9mm ID x 14.6mm OD x 23.9mm Length
• Interchange Numbers: 7190904A, 313-52001, 14520W, 213-500, ND-492, 28-82853

⚡ Brush Holder Assembly with Brushes Specs

• Replaces OEM / References: 021620-2010, 021620-2180, 021620-2200, 021620-2201, 021620-2630, 021620-2750
• Interchange Numbers: 39-8200

⚡ Drive End Bearing (Front) Specs

• Industry Number: 6202-2RS
• Dimensions: 15mm ID x 35mm OD x 11mm W
• Replaces OEM: Denso 949100-0070, 949100-0160, 949100-0330, 949100-0340, 949100-2951, 949100-3161, 949100-3731
• Interchange Numbers: 207-004, 6-202-4N

⚡ Rotor SRE Bearing (Rear) Specs

• Industry Number: 53207
• Dimensions: 15mm ID x 32mm OD x 11mm W
• Replaces OEM: Denso 949100-3170, 949100-3230, 949100-3650, 949100-3660, 949100-3670
• Interchange Numbers: 217-020, 6-3102-4W

💖 Our Worry-Free Promise

Because automotive electrical parts are highly specific, we want you to buy with total confidence. If you tear down your alternator and realize you need a different size or configuration, don't sweat it. We offer easy, no-hassle returns and fast refunds. We are here to help your DIY build succeed!