Alternator 12738 / 12738N – 12V 85A | High-Quality Replacement for Caterpillar, Perkins, JCB, Land Rover, Volvo, Genie, JLG
This 12V 85A Delco alternator (12738 / 12738N) is a premium replacement unit engineered to meet or exceed OEM performance for a wide range of industrial, construction, agricultural, and power-generation equipment. Built with an internal fan and internal regulator, it delivers stable charging output, excellent durability, and direct bolt-on compatibility.
The unit replaces an extensive list of OEM alternators from Caterpillar, Delco, Denso, JCB, Land Rover, Lucas, Magneti Marelli, and Perkins, making it one of the most widely used alternators for compact diesel engines such as CAT 3013C, 3024C, 3054C, and Perkins 403 / 404 Series.
✅ Interchange Part Numbers (Fully Organized & Complete)
Direct Numbers
12738, 12738N
Caterpillar
225-3141
225-3143
305-3661
394-3494
394-3496
3943496
Delco / Delco Remy
8600566
8600567
Denso
102211-8160
102211-8170
102211-8180
DAN653
JCB
714/32200
71432200
71440152
71440153
71440154
Land Rover
YLE10118
Lucas
24479
24480
24481
Marelli / Magneti Marelli
063377460010
063377461010
63377460
63377461
63377462
MAN7460
MAN7461
MAN7462
Original Reference
29604/3
Perkins
185046500
185046501
185046522
2871A300
2871A301
2871A302
2871A303
2871A306
2871A308
3943494
T414270
TPN758
TPN771
U85046501
U85046501T
✅ Specifications
Item Description: Alternator
Unit Type: Delco
Voltage: 12V
Amperage: 85A
Fan: Internal
Regulator: Internal
Pulley Type: Solid, 1 Groove
Pulley OD: 2.874 in (73 mm)
Mounting:
Ear 1 Hole: M8-1.25 (Threaded), 17.3 mm thick
Ear 2 Hole: 8.7 mm (Unthreaded), 13.8 mm thick
Ear 3 Hole: 8.4 mm (Unthreaded), 20 mm thick
Terminals:
B+: M6-1.0
D+: M5-0.8
W : M5-0.8
Polarity: Negative
Weight: 10.6 lbs / 4.82 kg
✅ Fits Engines
Caterpillar Engines
3013C, 3024C, 3054C
C1.5, C1.7, C2.2
XQ35, XQP60, XQP100, XQP150
Perkins Engines (403 & 404 Series)
403A-15, 403D-11, 403D-15, 403D-15T
403D-17, 403F-15, 403F-15T
404A-22, 404D-15, 404D-22, 404D-22T
404F-22, 404F-22T
✅ Fits Equipment
Caterpillar Equipment
Skid Steers:
216B, 216B3, 226B, 226B3, 226D3
232B, 232D, 232D3
239D, 239D3
242B, 242B2
247B, 247B3
249D, 249D3
257B, 257B2Mini Excavators & Compact Machines:
301.5, 301.6, 301.7CR, 301.8
302CR, 302.7CR
303CR, 303.5CR
304CR, 305CR
305.5CR, 305.5GC
901Compactors / Rollers:
CB22, CB22B
CB24, CB24B, CB24B-XT
CB32, CB32B
CB34, CB34B, CB34B-XW
CB36B
CB2.5, CB2.5GC
CB2.7, CB2.9
CB214E, CB224E, CB225E
CB334E, CB334E-XW
CC24, CC24B
CC34, CC34B
CC2.6, CC2.7Pavers / Other Machines:
AP255E
BB621C
FG Wilson – Generator Sets
Genie – Material Lifts / Aerial Equipment
JLG – Lift & Access Equipment
Volvo Skid Steers
MC60C, MC70C, MC85C, MC95C
MC100C, MC105C
MCT70C, MCT85C, MCT95C
Alternator 8600566 8600567 305-3661 394-349 – Fits Caterpillar 3013C, 3024C, 3054C & C1.5
ITEM DESCRIPTION: ALTERNATOR
UNIT TYPE: DELCO
VOLTAGE: 12
AMPERAGE: 85
FAN: INTERNAL
REGULATOR: INTERNAL
SERPENTINE GROOVES OD
GROOVES: 1
PULLEY TYPE: SOLID
PULLEY OD: 2.874IN / 73MM
MOUNTING EAR 1 HOLE: M8-1.25 THREADED
MOUNTING EAR 2 HOLE: 8.7MM UNTHREADED
MOUNTING EAR 3 HOLE: 8.4MM UNTHREADED
MOUNTING EAR 1 THICKNESS: 0.681IN / 17.3MM
MOUNTING EAR 2 THICKNESS: 0.543IN / 13.8MM
MOUNTING EAR 3 THICKNESS: 0.787IN / 20MM
B+ TERMINAL: M6-1.0
D+ TERMINAL: M5-0.8
W TERMINAL: M5-0.8
POLARITY: NEGATIVE
WEIGHT: 10.6 LBS / 4.82 KG
