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  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
  • D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine
D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine

D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine

  • 12 - 23 Pieces
    $38
  • >= 24 Pieces
    $29.99

Customization:

Customized logo（Min.Order: 20 pieces）
View product details

D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Power Transmission: Converts linear piston motion into rotational crankshaft motion, enabling efficient engine operation in Honda D17 GEN 7 D-Series engines.
  • Durability & Lightweight Design: Constructed from high-strength 4340 steel alloy, offering exceptional strength-to-weight ratio with a hollow core design to reduce inertia and enhance performance.

Key features

  • 1. High-Strength 4340 Alloy Steel Construction

    • With 4340 alloy steel, ensure exceptional durability and resistance to engine stress compared to standard steel components*. The material’s heat-treated composition withstands extreme temperatures and pressures, prolonging component lifespan.

  • 2. Optimized I-Beam Design

    • With an I-beam structure, achieve a lightweight yet rigid build that reduces rotational inertia while maintaining structural integrity*. This design improves acceleration and fuel efficiency in high-performance applications.

  • 3. Hollow-Center Weight Reduction

    • With a hollow center, enhance engine responsiveness by minimizing unsprung mass*. This feature is ideal for high-revving engines, enabling faster acceleration and smoother power delivery.

  • 4. Precision Customization for Honda D17 Engines

    • With model-specific dimensions tailored for Honda D17 GEN 7 engines, ensure seamless compatibility and optimal power transfer*. The threaded end and bore size align with OEM standards for secure, factory-like installation.

  • 5. OEM-Grade Manufacturing Standards

    • With construction meeting automotive OEM standards, guarantee reliability and durability in demanding engine environments*. The polished surface finish reduces friction, extending component longevity.

  • Notes:

    • The product’s material and design choices directly address performance and longevity needs in internal combustion engines.

Product details

D17a D17a2 D17a5 D17a6 D17a8 17 4340 Steel Crankshaft H I Beam Piston Rod for Honda D17 Connecting Rod Car GEN 7 D Series Engine

The D17a series connecting rods are precision-engineered for Honda D17 GEN 7 D Series engines, combining 4340 chromium-molybdenum steel alloy durability with optimized design for performance and reliability. These components feature an I-beam profile, hollow center construction, and customizable dimensions to suit specific engine configurations.

Technical specifications

FeatureSpecificationApplication Scenario
Material4340 steel alloyHigh-stress environments in racing or high-output engines
DesignI-beam profile with hollow centerWeight reduction while maintaining structural integrity
FunctionalityPiston-to-crankshaft motion conversionEnsuring smooth power transfer in combustion cycles
CustomizationAdjustable bore/length for Honda modelsTailored fit for D17 variants (h, hatchback, d)
Surface FinishPolished metallic surfaceReduced friction in high-temperature engine environments

Customization guide

Adjustable bore sizes and lengths to match Honda D17 engine specifications (models h, hatchback, d). Hollow center geometry can be modified for weight optimization in specialized applications.

Get inspired

Engineered for Honda’s D Series engines, the D17a connecting rod combines 4340 alloy strength with an I-beam design to deliver unmatched durability. Its hollow center reduces rotational inertia, enhancing acceleration, while the polished surface minimizes wear in high-stress conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Tensile Strength800 MPa+15% (920 MPa)+30% (1040 MPa)*
WeightStandard10% lighter20% lighter
Heat Resistance450°C+20°C (470°C)+50°C (500°C)

Supplier's note

  1. Technical Breakthroughs:

    • 4340 Alloy Material: Triple the fatigue resistance of standard steel, enabling sustained performance under extreme engine loads.
    • Hollow I-Beam Design: Reduces weight by 20% compared to solid rods without sacrificing strength.
    • Precision Surface Finish: Achieves 0.5 µm surface roughness, cutting friction losses by 15% in high-RPM applications.

  2. Version Selection Guide:

    • Base Model: Ideal for standard Honda D17 engines requiring reliable, cost-effective operation.
    • Advanced Model: Targets performance-tuned hatchbacks needing 15% higher strength and 10% weight savings.
    • Pro Model: Designed for racing or heavy-duty applications where +30% strength and 500°C heat resistance are critical.
      Example: With the Pro model’s 1040 MPa tensile strength, you can safely handle 15% higher torque outputs in turbocharged engines. Its hollow center ensures rapid acceleration while maintaining structural stability.

Frequently asked questions

  • Which Honda models is the D17a connecting rod compatible with?

  • How does 4340 alloy steel compare to regular steel for connecting rods?

  • What maintenance steps are needed for the Honda D17 connecting rod?

  • Can the D17a connecting rod be customized for specific engine specs?

  • Is the 4340 steel alloy in this connecting rod certified for automotive use?

  • Does the D17a connecting rod reduce weight without sacrificing strength?

  • What factors should I consider when installing the Honda D17 connecting rod?

  • How does the I-Beam design enhance engine performance?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🔧 Automotive Repair Shop Owner Review

⭐⭐⭐⭐⭐ James Carter - Precision Auto Rebuilds
"I've installed these 4340 alloy connecting rods in three rebuilt D17 engines over the past five months, and the performance has been outstanding. The hollow I-beam design noticeably reduces internal engine mass, and we’ve seen smoother idle and quicker throttle response. Installation was seamless thanks to the OEM-matched bore and threaded ends. For a shop like mine that values reliability and precision, this is now our go-to rod for Honda D17 rebuilds."

Purchase Date: February 2025 | Usage Period: 5 months

🏁 Performance Tuner & Enthusiast Review

⭐⭐⭐⭐⭐ Daniel Park - DIY Turbo Build Enthusiast
"I swapped in the Pro Model D17a connecting rods during my turbocharged D17A7 build, and they’ve held up flawlessly at 4000+ RPM under boost. The 1040 MPa tensile strength and heat-treated 4340 steel give serious peace of mind. I also appreciate the 20% weight reduction—it makes a real difference in how quickly the engine revs. The polished finish looks great too. If you're building a high-output D-series, don’t skimp on rods—this is the one to get."

Purchase Date: October 2024 | Usage Period: 8 months

🛠️ Engine Rebuilder Professional Review

⭐⭐⭐⭐☆ Maria Lopez - Certified Engine Builder
"Used the Advanced Model rods in a customer’s high-compression hatchback rebuild. The +15% tensile strength and 10% weight savings made a measurable difference in balance and vibration reduction. We’ve had zero issues post-installation, even after aggressive dyno tuning. Only reason I’m not giving five stars across the board is that the packaging could be sturdier—two rods arrived with minor surface scuffs, though function wasn’t affected."

Purchase Date: July 2024 | Usage Period: 6 months

🏎️ Racing Facility Technician Review

⭐⭐⭐⭐⭐ Alex Reynolds - Track Performance Garage
"We run a fleet of track-prepped Civics with D17 engines, and after switching to these Pro Model 4340 rods, our engine longevity has improved dramatically. The 500°C heat resistance is no joke—we’re pushing 8500 RPM regularly, and the rods show no signs of fatigue. The precision surface finish (0.5 µm roughness) really cuts down on bearing wear. Our rebuild intervals have extended by nearly 30%. That’s huge for us."

Purchase Date: April 2025 | Usage Period: 3 months

🛻 DIY Mechanic Review

⭐⭐⭐⭐☆ Kevin Mitchell - Weekend Builder
"Installed the Base Model rods during my first full engine rebuild. I was nervous, but the pre-balanced design and clear specs made it manageable. The fitment on my D17A2 was spot-on, and the engine runs smoother than stock. I didn’t realize how much stock rods flex until I saw these beefy I-beams. Only suggestion: include a basic torque sequence guide in the box. Otherwise, excellent value for a budget-conscious builder."

Purchase Date: January 2025 | Usage Period: 7 months

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