Cummins X15 ISX15 QSX15 Rear Intake Rocker Arm 4059353 4059413 | Diesel Engine Parts

Product Details

Product Overview

This high-performance Rear Intake Rocker Arm is a direct replacement for Cummins X15, ISX15, and QSX15 diesel engines. Engineered to OEM specifications, this component is critical for precise valve actuation, ensuring optimal engine performance and fuel efficiency. We are a global supplier, serving major markets in North America, Europe, Asia-Pacific, and the Middle East with fast, reliable shipping to industrial centers and major ports worldwide.

Key Features & Benefits

• Precision Engineering: Manufactured to strict OEM tolerances for a perfect fit and seamless integration with your existing valvetrain.
• Enhanced Durability: Constructed from high-strength alloy steel to withstand the extreme pressure and heat cycles of heavy-duty diesel operation.
• Improved Valve Timing: Ensures accurate rocker arm ratio for consistent valve lift and timing, maximizing combustion efficiency and horsepower.
• Wear-Resistant Design: Features hardened contact surfaces and a precision-machined pivot bore to reduce friction and extend service life.
• Rigorous Testing: Each unit is 100% inspected for dimensional accuracy and hardness before shipment to guarantee reliability.

Technical Specifications

OEM Cross-Reference

This rocker arm directly replaces the following OEM part numbers:

• Cummins OEM: 4059353, 4059413, 5484231, 4298642, 4318207
• Alternative/Interchange: 4059366, 4059414 (check application)

Note: Always verify your specific engine build date and serial number for complete compatibility.

Compatibility

• Engine Models: Cummins X15 (all variants), ISX15 (CM2250, CM2350, CM2450), QSX15 (Industrial & Marine)
• Vehicle Applications: Kenworth T680/T880, Peterbilt 567/579, Freightliner Cascadia, International ProStar, Volvo VNL (with Cummins engine), and various heavy-duty truck and industrial equipment.
• Year Ranges: Typically 2010-2024 (dependent on specific engine configuration).

Global Supply & Distribution

We are a premier exporter of heavy-duty diesel engine parts, offering seamless worldwide logistics.

• Shipping: Express (DHL/FedEx/UPS) and Sea Freight (FCL/LCL) available.
• Major Markets: USA, Canada, Mexico, Germany, Netherlands, UAE, Saudi Arabia, Australia, Singapore, South Africa.
• Delivery: Fast dispatch from our regional warehouses to ports like Rotterdam, Dubai, Los Angeles, and Shanghai.
• Trade Compliance: We provide full documentation for customs clearance and all international trade requirements.

Quality Assurance

• Standard: Manufactured in ISO 9001:2015 certified facilities.
• Testing: 100% dimensional verification, hardness testing (Rockwell), and visual inspection per batch.
• Warranty: 12-month warranty against manufacturing defects in material and workmanship.

FAQ

Q1: Is this rocker arm a direct replacement for the OEM part 4059353 on my ISX15?
A: Yes, this product is a direct, drop-in replacement for OEM number 4059353. It matches the original dimensions, material grade, and rocker ratio. Always check that your engine uses a rear intake configuration.

Q2: What is the recommended installation procedure for this rocker arm?
A: Installation requires standard mechanical skills. Ensure the engine is at top dead center (TDC) for cylinder #1. Lubricate the pivot ball and valve stem contact area with clean engine oil. Torque the mounting bolt to OEM specifications (typically 55-65 Nm). Always replace the corresponding pushrod and adjust valve lash if required.

Q3: How can I verify the correct rocker arm for my engine?
A: Please confirm your engine serial number (ESN) and the existing part number on your current rocker arm. Our parts are designed for the X15/ISX15/QSX15 series. If you have a different variant (e.g., Signature or N14), please contact us with your engine details to confirm fitment.