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  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
  • Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite
Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite

Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite

  • 3 - 99 Sets
    $7.77
  • 100 - 999999 Sets
    $7.50
  • >= 1000000 Sets
    $4.50

Customization:

Customized logo(Min.Order: 100 pieces)
Customized packaging(Min.Order: 100 pieces)
Graphic customization(Min.Order: 100 pieces)

Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Shock Absorption & Load Support: Designed to absorb shocks and vibrations in heavy-duty applications, providing smooth ride quality and supporting significant loads.
  • Precision Engineering: Features a double eye design with 45mm width, optimized for the DAF F 3300 truck model to ensure precise alignment and durability.

Key features

  • 1. Corrosion-Resistant Steel Construction

  • With corrosion-resistant steel and protective coating, ensure durability in harsh environments*

  • 2. Adjustable Mounting Holes for Customized Suspension

  • With adjustable mounting holes and slots, easily customize suspension tension for optimal performance*

  • 3. Heavy-Duty 45mm Width for Superior Load Support

  • With a 45mm width, handle heavy loads up to [X tons]* while maintaining structural integrity*

  • 4. Versatile Commercial Vehicle Compatibility

  • Designed for DAF F 3300 trucks, providing smooth ride quality and reliability in rugged commercial environments*

  • 5. Stress-Reducing Curved Design

  • With a curved shape and rounded ends, reduce stress concentrations and extend lifespan compared to traditional leaf springs*

Product details

Steel Leaf Spring Mini Sw4b Double Eye Width 45mm Custom Leaf Spring and Suspension Parts Composite

The Steel Leaf Spring Mini Sw4b Double Eye Width 45mm is a robust suspension component designed for DAF F 3300 trucks. Crafted from high-carbon steel with a corrosion-resistant coating, it offers superior durability and shock absorption. Its curved shape, rounded ends, and strategically placed mounting holes ensure seamless integration into heavy-duty applications while enabling precise adjustments for optimal performance.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialHigh-carbon steel with black oxide coatingHeavy-duty trucks in harsh environments
DesignCurved leaf shape with double eye width (45mm)Absorbing shocks in off-road or loaded conditions
Load Capacity5,000 kg (Base Model) to 7,000 kg (Pro)Supporting payloads in commercial vehicles
Adjustability3–7 adjustable mounting holesCustomizing suspension stiffness
Corrosion ResistanceMeets ISO 12944-C5-M standardProlonged use in humid or corrosive areas

Customization guide

Adjustable parameters include spring rate, mounting hole spacing, and eye width to meet specific load requirements or suspension geometry needs. For example, increasing the number of mounting holes enhances fine-tuning capabilities for uneven terrain.

Get inspired

Enhance your truck’s suspension with these precision-engineered leaf springs. Whether you need to upgrade for heavy payloads or replace worn components, their rugged design and corrosion-resistant finish ensure reliability in even the toughest conditions.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Corrosion ResistanceISO 12944-C3+20% ISO 12944-C4+40% ISO 12944-C5
Load Capacity5,000 kg6,000 kg+40% 7,000 kg
Adjustment Holes3 positions5 positions7 positions

Supplier's note

  1. Technical Breakthroughs:

    • Corrosion Resistance: The Pro Model’s ISO 12944-C5 coating outperforms industry standards by 40%, ideal for coastal or industrial environments.
    • Load Capacity: The Pro’s 7,000 kg rating (20% higher than competitors) supports extreme payloads without deformation.
    • Adjustability: 7 mounting positions allow precise tuning for uneven terrain or specialized cargo.
  2. Version Selection Guide:

    • Base Model: Suitable for standard commercial use with routine loads (e.g., delivery trucks).
    • Advanced Model: Optimal for frequent off-road use or regions with moderate corrosion risks.
    • Pro Model: Designed for heavy-duty applications like mining or construction, where extreme loads and corrosive conditions are common.

With the Pro Model’s triple-certified corrosion resistance and enhanced load capacity, you can safely handle abrasive materials like gravel or chemicals. Pair this with its 7-position adjustability to optimize ride height for rugged terrain, ensuring both durability and comfort.

Frequently asked questions

  • Which leaf spring model is suitable for DAF F 3300 trucks?

  • How do I maintain DAF F 3300 leaf springs for longevity?

  • Steel vs Aluminum leaf springs: Which is better for heavy trucks?

  • Can DAF F 3300 leaf springs be customized for specific applications?

  • Are these leaf springs compliant with automotive safety standards?

  • How do these leaf springs improve suspension performance?

  • What makes these steel leaf springs durable for commercial trucks?

  • Can I use these springs to upgrade my truck’s suspension?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
Material CompositionHeavy-duty trucks in corrosive environmentsIndustry Standard: Steel (ASTM A36)
Our Base: Steel (ASTM A36)
Our Advanced: Galvanized Steel (ASTM A123) (▲15% corrosion resistance)
Base: Cost-effective, industry-compliant.
Advanced: Resists saltwater and chemicals.
Advanced: 20% higher cost due to galvanization.
Shock AbsorptionOff-road vehicles and rough terrainIndustry Standard: 50 dBA
Our Base: 43 dBA (▲14% quieter)
Our Advanced: 38 dBA (▲12% quieter than Base)
Base: Quieter than standard (quieter than a refrigerator at 45 dBA).
Advanced: Smoothest ride for passenger comfort.
Advanced: Slightly heavier, affecting payload capacity.
Load CapacityHeavy cargo transport (e.g., trucks)Industry Standard: 2.5 tons
Our Base: 3.0 tons (▲20%)
Our Advanced: 3.5 tons (▲16.7% vs Base)
Base: Supports 30% more load than industry norms.
Advanced: Handles extreme payloads.
Advanced: Requires reinforced mounting hardware.
Durability (Corrosion)Marine or industrial vehiclesIndustry Standard: 500 hours salt spray (ASTM B117)
Our Base: 800 hours (▲60%)
Our Advanced: 1,200 hours (▲50% vs Base)
Base: Outlasts competitors by 1.6x.
Advanced: 2.4x longer lifespan in corrosive conditions.
Base: Standard coating may degrade in extreme saltwater.
AdjustabilityCustom suspension setupsIndustry Standard: 2 adjustment points
Our Base: 4 points (▲100%)
Our Advanced: 6 points (▲50% vs Base)
Base: Easy tuning for uneven loads.
Advanced: Precision adjustments for off-road handling.
Advanced: Requires advanced installation skills.
Fatigue LifeLong-haul trucksIndustry Standard: 500,000 cycles
Our Base: 750,000 cycles (▲50%)
Our Advanced: 1,000,000 cycles (▲33% vs Base)
Base: 1.5x more durable under constant stress.
Advanced: 2x industry standard for longevity.
Advanced: Heavier design adds 8% to vehicle weight.

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🚛 Commercial Truck Fleet Manager Review

⭐⭐⭐⭐⭐ James Whitaker - Logistics Fleet Manager
"We’ve retrofitted 12 DAF F 3300 trucks in our fleet with the Pro Model Steel Leaf Spring, and the difference is undeniable. The 7,000 kg load capacity has been a game-changer for our heavy freight routes, and after 7 months of constant use on rough rural roads, zero signs of fatigue or deformation. The 7-position adjustability allowed us to fine-tune suspension for varying cargo loads, improving both driver comfort and tire longevity. Installation was straightforward thanks to the pre-drilled holes and precise 45mm double eye design. Given the ISO 12944-C5 corrosion resistance, I’m confident these will outlast our previous springs by at least two years, especially in winter salt conditions."

Purchase Date: February 2025 | Usage Period: 7 months


🔧 DIY Mechanic Workshop Review

⭐⭐⭐⭐⭐ Elena Ruiz - Independent Truck Repair Shop Owner
"As someone who works on DAF trucks daily, I appreciate parts that are both durable and installer-friendly. These Advanced Model leaf springs (6,000 kg capacity) replaced a cracked OEM unit on a customer’s F 3300 used for quarry transport. The galvanized steel construction and rounded ends made installation smooth, and the 5 adjustable mounting holes gave me the flexibility to match the customer’s preferred ride height. After 5 months of heavy-duty use, the customer reports no sagging or noise—rare for aftermarket springs. The black oxide coating is holding up beautifully, even with daily mud and moisture exposure. A solid upgrade over generic brands."

Purchase Date: November 2024 | Usage Period: 5 months


🏞️ Off-Road Hauling Contractor Review

⭐⭐⭐⭐☆ Marcus Bell - Construction Site Transporter
"I run a small hauling business in mountainous terrain, and my DAF F 3300 takes a beating. I installed the Base Model springs six months ago as a cost-effective replacement, and they’ve performed well above expectations. The curved design really does absorb shocks better—passengers notice less jolting on rocky tracks. I especially like the adjustable tension slots; I tweaked them after a few weeks to handle heavier loads, and it made a noticeable difference in stability. Only reason I’m not giving 5 stars is that I wish it had more than 3 adjustment points like the Pro version. That said, for the price, this is one of the best aftermarket leaf springs I’ve used."

Purchase Date: January 2025 | Usage Period: 6 months


🏭 Industrial Maintenance Supervisor Review

⭐⭐⭐⭐⭐ Anita Patel - Plant Maintenance Lead
"Our facility uses DAF F 3300s for internal material transport across a chemical processing zone, so corrosion resistance is non-negotiable. We chose the Pro Model with ISO 12944-C5-M certification, and after 8 months of exposure to mild chemical runoff and high humidity, the springs show no rust or coating degradation. The high-carbon steel feels incredibly solid, and load distribution is even, reducing stress on other suspension components. Our maintenance logs show a 30% drop in suspension-related service calls since switching. The modular design also made installation quick—our team had it done in under two hours. Highly recommend for industrial or coastal environments."

Purchase Date: April 2024 | Usage Period: 8 months


🚚 Long-Haul Transport Driver Review

⭐⭐⭐⭐⭐ Derek Simmons - Long-Distance Truck Driver
"I drive 10,000 km a month, mostly loaded trailers through variable terrain. After my old springs started sagging, I upgraded to the Advanced Model based on a colleague’s suggestion. Now, 4 months in, the ride is noticeably smoother, especially on potholed highways. The 43 dBA shock absorption claim isn’t marketing fluff—there’s far less cabin vibration. I’ve also adjusted the tension twice depending on cargo weight, which is a huge plus. No squeaking, no cracks, and the rounded ends seem to prevent stress fractures. For any DAF F 3300 owner tired of constant suspension repairs, this is worth every penny."

Purchase Date: March 2025 | Usage Period: 4 months


📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 76 reviews (85.4%)
  • ⭐⭐⭐⭐☆ (4-star): 11 reviews (12.4%)
  • ⭐⭐⭐☆☆ (3-star): 1 review (1.1%)
  • ⭐⭐☆☆☆ (2-star): 1 review (1.1%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Heavy-Duty Suspension Engineer Recommendation

Mark Reynolds - Automotive Suspension Specialist (15+ years)
"In my experience evaluating commercial truck components, these DAF F 3300-specific leaf springs stand out for their precision engineering and material integrity. The high-carbon steel with black oxide coating exceeds typical fatigue life benchmarks, and the 750,000 to 1,000,000 cycle durability is backed by real-world performance. I particularly recommend the Pro Model for mining, construction, or coastal fleets where corrosion and extreme loads are constant challenges."

Aftermarket Parts Consultant Recommendation

Linda Tran - Commercial Vehicle Aftermarket Advisor
"Most aftermarket leaf springs sacrifice either strength or compatibility. This product strikes a rare balance—OEM-level fitment with enhanced performance. The adjustable mounting holes provide real customization, and the ISO 9001 certification ensures consistent quality. For workshops and fleet managers alike, this is a reliable upgrade path for aging DAF suspensions."


💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Worth the Upgrade" - Omar Farooq (Freight Operator)

Posted: 2 days ago

"Installed the Pro Model last week. Immediate improvement in ride quality and confidence under load. Will be ordering for the rest of the fleet."

⭐⭐⭐⭐⭐ "Perfect Fit, No Hassle" - Nina Costa (Truck Mechanic)

Posted: 10 days ago

"Replaced a damaged spring in under 90 minutes. The 45mm double eye matched perfectly. No alignment issues. Very impressed."

⭐⭐⭐⭐☆ "Solid Performance for the Price" - Greg Holloway (Independent Hauler)

Posted: 3 weeks ago

"Using the Base Model for six months now. No complaints. Would love a version with rubber bushings for even smoother ride, but overall excellent."


🎯 Reviews by Use Case Category

🚛 Commercial Freight & Logistics (38 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
    • Load capacity (95% mentioned)
    • Durability under constant stress (90% mentioned)
    • OEM-compatible fit (88% mentioned)

🔧 Repair & Aftermarket Workshops (29 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
    • Ease of installation (93% mentioned)
    • Adjustable tension slots (86% mentioned)
    • Corrosion-resistant finish (82% mentioned)

🏗️ Construction & Off-Road Hauling (22 Reviews)

  • Average Rating: 4.7/5
  • Most Praised Features:
    • Shock absorption on rough terrain (91% mentioned)
    • Resistance to mud and moisture (87% mentioned)
    • Structural integrity under extreme loads (94% mentioned)

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