This heavy-duty aftermarket crankshaft connecting rod is an excellent substitute part for Yamaha outboard engines. It is compatible with a full set of official OE specifications: 688-11411-01, 63V-11400-01, 6B4-11400-00 and 66T-11400. This wide compatibility allows it to adapt to various mainstream outboard motor models. Built with premium alloy steel materials and processed via high-precision CNC machining and standardized thermal hardening, this part boasts solid structural strength and superior anti-fatigue properties. It can reliably withstand repeated impact pressure and continuous cyclic load during long-duration marine working scenarios. This mechanical component keeps stable operating performance even in harsh offshore conditions with high moisture and salt erosion. All precision-cut surfaces meet strict industrial tolerance standards. As a result, users can complete quick, accurate assembly without any auxiliary cutting or fine calibration work. This premium replacement effectively fixes daily engine failures. Typical symptoms involve unstable running states, abnormal knocking sounds and decreased power performance. Such defects mostly emerge when original connecting rods experience long-term abrasion, bending deformation and metal fatigue. It stabilizes engine power output and delivers smoother operation conditions. Meanwhile, it prevents key internal accessories such as pistons from secondary friction and structural damage. When installed professionally and maintained with regular lubrication, this connecting rod can greatly extend the service cycle of your Yamaha outboard motor.
Lead Time
Sample orders: 3–7 working days
Bulk orders: 15–30 working days
11. Warranty
6-month limited warranty covers verified factory manufacturing defects. Warranty does not apply to damage caused by improper installation, insufficient lubrication, engine overload, overheating or manual misuse.
12. Certification
Made in an ISO9001 certified factory. CE and SGS quality inspection documents are available upon buyer request.
13. Real Product Photos
Full assembly overview, precision machined surface close-ups, crank connecting rod structural details, mounting interface display, neutral export packaging photos
14. Independent Product Description
CRANKSHAFT ASSY 9.9HP 15HP 6B4-11400-01 For Yamaha Outboard Engine
9.9hp 15HP 2 stroke Parsun T15D
It replaces for the following engines (more engines up to 2016 year model):
E9.9DMH .E15DMH (2003-2017)
6B4-11400-00 YAMAHA 2 Stroke [9.9],[15] HP
YAMAHA ENDUEO 2 Stroke [9.9],[15] HP
YAMAHA ENDUEO KEROSIN 2 Stroke [9.9],[15] HP
OEM Model NO. 688-11411-01,63V-11400-01,6B4-11400-00,66T-11400



1 years
China