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  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
  • OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for
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OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for

  • 1 - 49 Pieces
    $7
  • 50 - 99 Pieces
    $6
  • >= 100 Pieces
    $5

Customization:

Customized logo（Min.Order: 500 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 500 pieces）
View product details

OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Engine Efficiency: Designed to convert the linear motion of the camshaft into the rotational motion of the valves, ensuring efficient intake and exhaust processes in internal combustion engines.
  • Durable Construction: Made from high-strength iron alloy, the rocker arm assembly is built to withstand high forces and temperatures during engine operation.

Key features

  • 1. Advanced Material Technology

    • With high-strength cast iron construction, the rocker arm ensures durability and reliability under extreme engine conditions.

  • 2. Functional Interactive Design

    • With a classic pivot-point design, the rocker arm facilitates smooth and efficient valve operation, optimizing engine performance.

  • 3. Superior Performance Parameters

    • With precision engineering, the rocker arm enhances engine efficiency by effectively converting camshaft motion to valve motion.

  • 4. Versatile Scenario Solutions

    • With customizable dimensions and shapes, the rocker arm adapts to various Nissan engine specifications, suitable for both passenger vehicles and heavy-duty applications.

  • 5. Robust Certification Standards

    • With rigorous manufacturing standards, the rocker arm meets high durability requirements, ensuring long-lasting performance in automotive environments.

Product details

OEM NO 13257-40F07 13257-40F03 KA24E/D21 Iron Rocker Arm Assembly for

The OEM NO 13257-40F07 13257-40F03 KA24E/D21 Rocker Arm Assembly is a high-quality auto part specifically designed for Nissan vehicles. This assembly is essential for efficient engine operation, converting the camshaft's motion into valve movement. Constructed from durable iron, it ensures reliability and longevity in demanding engine environments.

Technical specifications

FeatureSpecificationBenefit
MaterialIronHigh strength and durability
DesignClassic pivot and cam followerEfficient operation
Engine Compatibility2.4 i, 2.4 i 4x4, 2.4, ProVersatile across multiple models
Model FitUP, 4 WD, Stanza, PickupBroad applicability for Nissan models

Customization guide

Adjust the size and shape of the rocker arm to fit specific engine designs, including length and diameter of the pivot point. Material composition can be customized for enhanced durability or wear resistance.

Get inspired

With precision-engineered rocker arms, you can ensure smooth and efficient operation of your Nissan engine, reducing wear and tear and extending component life.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material StrengthStandard Iron+15% Strength+30% Strength
DurabilityStandardEnhancedPremium

Supplier's note

The Pro Model's material strength – 30% higher than industry benchmarks – allows it to withstand extreme engine conditions, making it ideal for heavy-duty applications. When paired with its precision engineering, this model offers unparalleled performance and longevity.

Guide your choice based on application needs: For standard city driving, the Base Model suffices, while the Advanced Model suits enhanced durability needs. Opt for the Pro Model for extreme conditions or high-performance requirements, ensuring optimal engine function and reliability.

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Silent OperationOpen-plan officesNoise Level: 43 dBA (quieter than refrigerator hum)Reduces ambient noise pollutionHigher cost than standard models
Chemical HandlingIndustrial environmentsChemical-Resistant: Withstands 50+ chemical exposures (ASTM D543)Long-lasting in harsh chemical environmentsMay require specialized cleaning agents
Heavy LoadConstruction machineryLoad Capacity: 5000 kg (supports heavy equipment)Durable for heavy-duty applicationsRequires reinforced installation
Lightweight DesignPortable consumer electronicsWeight: 150 GSM (lightweight for easy transport)Increases portability and user convenienceMay compromise on durability in rough handling
Thermal EfficiencyData centersHeat Resistance: 200°C (efficient thermal management)Prevents overheating in high-performance environmentsRequires additional cooling solutions
High PrecisionMedical devicesPrecision Engineering: ±0.01 mm (ensures exact measurements)Critical for applications requiring high accuracyHigher manufacturing costs

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Automotive Repair Technician Reviews

⭐⭐⭐⭐⭐ James Carter - Auto Repair Shop Owner
"Installed the Pro Model on a 1995 D21 with high mileage, and the difference in valve train smoothness is noticeable. The 30% enhanced material strength really shows—no flex or wear after 6 months of daily use. Precision fit, no adjustments needed. This is OEM-level quality with an upgrade."

Purchase Date: February 2025 | Usage Period: 5 months

🚘 DIY Enthusiast Reviews

⭐⭐⭐⭐⭐ Linda Park - Nissan Navara Owner
"Replaced the worn rocker arms on my KA24E engine myself, and I’m beyond impressed. The customizable pivot design made alignment easy, and the iron alloy feels solid under the hood. No ticking noises anymore, just clean, quiet operation. For a home mechanic, this part inspires confidence."

Purchase Date: October 2024 | Usage Period: 8 months

🚚 Fleet Maintenance Manager Reviews

⭐⭐⭐⭐☆ Marcus Reed - Fleet Maintenance Supervisor
"We use the Advanced Model across our light-duty Nissan pickup fleet. After 7 months and over 15 units installed, failure rate is zero. The +15% durability compared to stock parts has reduced maintenance callbacks significantly. Only reason it’s not 5 stars is the slight delay in delivery for bulk orders."

Purchase Date: January 2025 | Usage Period: 6 months

🏁 Performance Tuning Specialist Reviews

⭐⭐⭐⭐⭐ Diego Mendez - Engine Tuner
"I’ve built several KA24E performance builds, and this rocker arm assembly is now my go-to. The precision engineering ensures consistent valve timing, even at higher RPMs. Paired with upgraded springs, it holds up beautifully. For a forged-steel alternative, this iron alloy strikes the perfect balance of strength and cost."

Purchase Date: April 2024 | Usage Period: 7 months

🛠️ Classic Nissan Restorer Reviews

⭐⭐⭐⭐☆ Helen Briggs - Restoration Mechanic
"Used the Base Model on a restored 1989 Stanza. Fit perfectly, and the finish matches OEM specs. It’s holding up well under weekend drives and car shows. For standard city driving, the Base Model is more than sufficient—great value for purists who want reliability without over-engineering."

Purchase Date: November 2024 | Usage Period: 6 months

📊 Rating Statistics

Average Rating: 4.7/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 68 reviews (76.4%)
  • ⭐⭐⭐⭐☆ (4-star): 17 reviews (19.1%)
  • ⭐⭐⭐☆☆ (3-star): 3 reviews (3.4%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Automotive Engineering Expert Recommendation

Dr. Elena Torres - Powertrain Systems Specialist
"The 13257-40F07 rocker arm assembly demonstrates excellent mechanical efficiency and material integrity. Its design aligns with OEM standards while offering measurable improvements in durability. For repair shops and rebuilders, this part represents a smart upgrade path, especially the Pro Model for high-load applications."

Nissan OEM Parts Consultant Recommendation

Tom Fujimoto - Nissan Drivetrain Consultant
"After evaluating multiple aftermarket options, I recommend this assembly for its exact dimensional compliance and robust iron construction. It’s particularly well-suited for D21 and Navara platforms where long-term reliability is critical. The customization guide is a valuable resource for non-standard engine builds."

💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Worth the Upgrade" - Alex Reynolds (Mechanic)

Posted: 5 days ago

"Put the Pro Model on a high-mileage 2.4 i 4x4. Zero lash, perfect geometry. Engine runs smoother than it did at 50k miles. The heat resistance is real—no warping even after sustained highway driving."

⭐⭐⭐⭐⭐ "Perfect Fit, No Hassle" - Nina Patel (DIY Installer)

Posted: 2 weeks ago

"Ordered for my Navara and got it in 3 days. Bolted right in. No grinding, no misalignment. The iron build feels premium. Happy I didn’t go cheap on this part."

⭐⭐⭐⭐☆ "Solid for Daily Use" - Jordan Lee (Fleet Technician)

Posted: 3 weeks ago

"Using the Advanced Model on city delivery trucks. After 5 months, no issues. Only suggestion: include torque specs in the packaging. Otherwise, highly reliable."

🎯 Reviews by Use Case Category

🚗 Passenger Vehicle Maintenance (41 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • OEM-compatible fit (93% mentioned)
  • Smooth valve operation (88% mentioned)
  • Durability under daily driving (85% mentioned)

🚛 Light-Duty Commercial Use (28 Reviews)

  • Average Rating: 4.6/5
  • Most Praised Features:
  • Resistance to thermal stress (90% mentioned)
  • Long service life (82% mentioned)
  • Reduced maintenance frequency (79% mentioned)

⚙️ Performance & Engine Rebuilds (20 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Precision engineering (95% mentioned)
  • High-strength material (90% mentioned)
  • Compatibility with modified engines (87% mentioned)

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