3978313 | Flywheel Ring Gear Genuine Cummins®

Useful Information

Description: Flywheel Ring Gear
Condition: New
Brand: Cummins®
Part Number: 3978313 

Type: Ring Gear

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Suitable for Engine:

4B3.9, 6A3.4, 6B5.9, B4.5, B4.5 CM2350 B129B,
B4.5 CM2350 B146C, B4.5 CM2350 B147B, B4.5 RGT
B4.5S, B5.9 G, B5.9 GAS PLUS CM556, B5.9 LPG
B5.9 LPG PLUS CM556, B6.7 CM2350 B121B
B6.7 CM2350 B135B, B6.7 CM2350 B136C, B6.7
CM2350 B148B, B6.7 G CMOH6.0 B125, B6.7N
CM2380, B150B, B6.7S, F3.8 CM2350 F120B, F3.8
F128C, F3.8 CM2350 F132B, F3.8 F102, G3.9, G5.9
G5.9 CM558, ISB (CHRYSLER), ISB CM2150, ISB 
ISB CM550, ISB CM850, ISB/ISD4.5 CM2150 B119
ISB/ISD4.5 CM2150 SN, ISB/ISD6.7 CM2150 B120
ISB/ISD6.7 CM2150 SN, ISB/ISD6.7 CM2880 B126
ISB3.9 CM2220 B107, ISB4.5 CM2150, ISB5.9G CM2180
ISB6.7 2010 DCX PICKUP, ISB6.7 2013 DCX CHASSIS CAB
ISB6.7 CM2150 SQ, ISB6.7 CM2250, ISB6.7 CM2350 B101
ISB6.7 CM2350 B103, ISB6.7 CM2350 B142, ISB6.7, CM2670
B153B, ISB6.7 G CM2180 B118, ISBE CM2150, ISBE CM800
ISBE2/ISBE3 CM850, ISBE4 CM850, ISD4.5 CM2150, ISD6.7
CM2880 D101, ISF2.8 CM2220, ISF2.8 CM2220 AN, ISF2.8
CM2220 EC, ISF2.8 CM2220 ECF2, ISF2.8 CM2220 F101
ISF2.8 CM2220 F117, ISF2.8 CM2220 F122, ISF2.8 CM2220
F126, ISF2.8 CM2220 F129, ISF2.8 CM2220 IAN, ISF3.8 CM2220
ISF3.8 CM2220 AN, ISF3.8 CM2220 F103, ISF3.8 CM2220
F110, ISF3.8 CM2220 F116, ISF3.8 CM2220 F134B, ISF3.8
CM2220 IAN, ISF3.8 CM2350 F109, ISF4.5 CM2220 F123
ISG11 CM2880 G106, ISG11 CM2880 G108, ISG12 CM2880
G107, ISG12 CM2880 G109, ISG12 G CMOH6.0 G111
QSB3.9 30 CM550, QSB3.9 CM2880 B138, QSB4.5
30 CM550, QSB4.5 CM2150 B108, QSB4.5 CM2250
B131, QSB4.5 CM2250 EC, QSB4.5 CM2350 B106
QSB4.5, CM2350, B122, CM2350, CM2150

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Specifications:

Weight: 2 lb
Dimensions: Height 46 In x Length 5 In x Width 46 In

Number of teeth  - 159
Maximum RPM: 2920
Ring Gear Pitch: 10/12

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Description and Purpose

The Cummins® Flywheel Ring Gear is a brand-new, high-quality component designed for compatibility with various Cummins engines, including the 4B3.9, 6B5.9, B4.5, B6.7, ISB, ISF, ISG, and QSB series. This precision-engineered ring gear, featuring 159 teeth and a ring gear pitch of 10/12, ensures efficient engagement with the starter motor to initiate engine operation. With a lightweight design of 2 lbs, it is tailored for durability and reliability in demanding environments, supporting maximum RPMs of up to 2920.

Why Replacement is Important

The ring gear is critical for starting the engine. A worn or damaged ring gear can cause incomplete engagement with the starter motor, resulting in starting difficulties or damage to the starter pinion. Replacing the ring gear ensures consistent engine starting performance, minimizes wear on related components, and reduces the risk of unexpected downtime.

Impact on Vehicle Performance

The Cummins® Flywheel Ring Gear enhances vehicle reliability by delivering smooth and dependable starter engagement. Its robust construction ensures durability under high torque and RPM conditions, contributing to seamless engine starts. Maintaining a healthy ring gear reduces mechanical stress on the starter motor, promoting overall system efficiency and extending the lifespan of both components.

Manufacturer Information:

Cummins Inc. is a globally recognized American multinational corporation specializing in the design, manufacturing, and distribution of engines, filtration systems, and power generation products. In addition to its core offerings, Cummins provides comprehensive services for engines and related equipment, including fuel systems, controls, air handling, filtration, emission control technologies, and electrical power generation systems.

With its headquarters located in Columbus, Indiana, Cummins operates in approximately 190 countries and territories, supported by a robust network of over 600 company-owned and independent distributors and around 7,200 dealers worldwide.

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Tags & Category: Flywheel, Engine Flywheel, Engine Flywheel Assy, Clutch Flywheel Assy, FLYWHEEL ASSEMBLY, Fly Wheel, New, Clutch Flywheel, Engine, Flywheel Ring Gear, Gear, Ring

Warranty:
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