ATG20229 Alternator 3935530 10459261 3920617 for Cummins M11 QSB5.9 CM850 Mechanical Engine Replacement
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PRODUCT DETAILS
24V 70A Alternator ATG20229 3935530 10459261 3920617 3251135 for Cummins M11 QSM11 QSB5.9 QSL9 CM850 DELCO 21SI Replacement
Part Numbers
Hyundai: 21E6-40030, 21EA-00050, 21Q6-41000
Cummins: 3251135, 3675174RX, 3675201RX, 3675242RX, 3920617, 3920618, 3920618RX, 3935530, 3935538
Perkins: CH11087
Nikko: 0-35000-0390 / 0391 / 0392 / 0460 / 0461 / 0471 / 0480
Bosch: 0986081030
Samsung: 1022-03500
Delco: 10459026, 10459261, 10459274, 10459306, 10459311, 10459333, 10459372, 10459461, 10459468, 10461235, 19010108, 19010111, 19010121, 19010148, 19010182, 19010185, 19010193, 19010195, 19010199, 19010200, 19011004, 19011010, 19011014, 19011015, 19011019, 19011192, 19020307, 19020346, 19020366, 19020376, 19020382, 19020383, 19020391, 19090008, 30014VL, 51218, 8600334
Prestolite: 110-446, MDA3946
Caterpillar: 0R8279, 1077977, 1322156
Komatsu: 1305787H91, 1307203H1, 6008219390, 6216846650, 6742015170, 6742015175, 871140044, ALT1022, ALT1023, R6742015175
Dresser: 1305787H91, PB6874
Daewoo: 219072
HC-Parts: UA1620IR
Cargo: 112160, 112188
Lucas: LEA0267, LRA02997
WAI: 1-2291-00DR, 1-2340-00DR, 12259R, 20-1114
Messmer: 209280A
WPS: 42740, 42788, 8003N, 8367N
Hella: 8EL738004-001
Krauf: ALD1620, ALD8620, ALD9620, ALD9920Product Description
This 24V 70A heavy-duty alternator is a 100% new aftermarket replacement designed for DELCO 21SI series applications. It provides stable and efficient charging performance for a wide range of Cummins diesel engines used in construction, industrial, and generator equipment. Built for durability and high-load operation, it ensures reliable electrical output under harsh working conditions.
Product Specifications
Item Type: Alternator
Condition: 100% New Aftermarket
Voltage: 24V
Amperage: 70A
Weight: 8.3 KG
Rotation: Bi-directional
Ground: Negative Ground
Pulley: Without Pulley
Series: DELCO 21SI IR/EF
Engine Compatibility
Cummins 6B5.9 / 6C8.3 / B4.5 CM2350 B161M
Cummins ISM CM570
Cummins M11 CELECT PLUS / Mechanical
Cummins QSB5.9 CM850 / QSB6.7 CM2250
Cummins QSL9 CM850 / CM2850
Cummins QSM11 CM570 / CM876 M102M
Applications
Construction machinery
Industrial diesel generator sets
Heavy-duty trucks and equipment
Forestry and mining machines
Power systems and auxiliary equipment
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PRODUCT HIGHLIGHTS
Feature Description High Output Stable 24V 70A charging performance Wide Compatibility Fits multiple Cummins engine platforms Heavy Duty Build Designed for harsh industrial environments 21SI Series Design Compatible with DELCO IR/EF systems Reliable Operation Continuous duty performance -
SHIPPING
Item DetailsProcessing Time Orders are processed within 1-3 business days after payment confirmationShipping Methods DHL/UPS/ FedEx/ TNT/ Air Freight/ Sea FreightEstimated Delivery Time Express shipping: 3-7 business days, depending on destinationPackaging Export-standard cartons with protective inner packingTracking Tracking number will be provided once the order is shippedShipping Cost Calculated based on weight, dimensions, and destination
WARRANTY POLICY
All new aftermarket parts come with a 1-Year warranty. Quality is the first thing we consider. Check out our Warranty Assistance for more details.
SHIPPING POLICY
We offer express and standard shipping options to ensure your off-road machine gets back in action—fast and reliably. For more details, please visit our Shipping Policy .
EASY RETURN POLICY
We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.
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