Product Name: Left Front Spring Cover Plate
OEM Number: WG9416520011
Brand: SINOTRUK / CNHTC (OEM grade)
Application: SINOTRUK HOWO 336, SHACMAN Delong, Foton Auman, Steyr, FAW Jiefang heavy duty trucks

--- WHAT IT IS ---

The WG9416520011 is a left front spring cover plate, also known as a front leaf spring cover or spring clamp plate. It is a structural chassis component that secures the front leaf spring pack to the axle or spring mounting bracket on heavy duty trucks.

This cover plate sits on top of the front leaf spring pack and works together with U-bolts to clamp the spring firmly in place. It distributes clamping force evenly across the spring leaves, preventing spring separation, lateral movement, and premature wear.

--- THE PROBLEM IT SOLVES ---

Heavy duty trucks operate under extreme loads, vibration, and road shock. The original spring cover plate can crack, deform, or corrode over time. A damaged cover plate leads to uneven spring clamping, allowing leaf springs to shift sideways or separate. This causes poor axle alignment, uneven tire wear, compromised steering stability, and increased stress on U-bolts. In severe cases, a failed cover plate can allow the spring pack to loosen, resulting in dangerous handling and potential spring failure.

This replacement restores proper spring clamping force, maintains axle alignment, and ensures safe suspension operation.

--- WHY CHOOSE THIS UNIT ---

Genuine OEM specification means exact fitment on compatible truck models without modification. The cover plate is manufactured from high strength cast iron or heavy duty steel (as per original design), providing the rigidity needed to withstand repeated high torque loads from U-bolts.

It is designed for left front position, but the same part number may also apply to right side depending on vehicle model. Always confirm orientation before ordering.

The component features precision machined locating surfaces and bolt holes that align perfectly with the spring pack and mounting bracket. It includes the necessary holes for U-bolts and spring alignment pins.

Cross compatibility across five major Chinese truck brands (SINOTRUK, SHACMAN, Foton Auman, Steyr, FAW Jiefang) makes this a valuable replacement part for mixed fleet operators and parts distributors.

--- TECHNICAL DETAILS ---

OEM Number: WG9416520011
Component Type: Left front spring cover plate / spring clamp plate / leaf spring cover
Position: Left front (driver side)
Material: High strength cast iron or heavy duty steel (OEM specification)
Mounting: Secured by U-bolts to axle or spring bracket
Surface Finish: Black anti-corrosion coating
Weight: Approximately 2.5 to 3.5 kg depending on casting design
Function: Distribute U-bolt clamping force evenly across leaf spring pack

--- PRODUCT PARAMETERS ---

Condition: New
Warranty: 12 months
Applicable Industries: Heavy duty truck fleet maintenance, auto repair shops, commercial vehicle parts wholesale
Video outgoing-inspection: Available upon request
Machinery Test Report: Available upon request
Marketing Type: Regular product (OEM grade)
Standard or Nonstandard: Standard (OEM specification)
Structure: One-piece cast or fabricated steel plate
Body Material: Cast iron / steel
Place of Origin: Shandong, China
Brand Name: SINOTRUK / CNHTC (OEM grade)
Product Name: Left Front Spring Cover Plate
OE Number: WG9416520011
Color: Black
Quality: High-Quality (OEM grade)
Package: Neutral carton with foam protection
Delivery time: 7 to 15 working days after order confirmation
Payment terms: T/T, Western Union, PayPal
MOQ: 1 piece
Sample: Available (customer pays shipping)

--- MATERIAL COMPOSITION ---

Base Material: High strength cast iron (HT250 or equivalent) or stamped heavy duty steel
Surface Coating: Black anti-rust paint or e-coat
Hardware Holes: Precision drilled or cast to match U-bolt spacing
Contact Surfaces: Machined flat to ensure even clamping pressure

--- COMPATIBLE VEHICLE APPLICATIONS ---

Confirmed fitment (verify by VIN or visual comparison):

SINOTRUK HOWO 336 (most common application)
SINOTRUK HOWO series heavy duty trucks (various models)
SHACMAN Delong series (F3000, X3000, M3000)
Foton Auman series (Auman EST, Auman 9 series)
SINOTRUK Steyr series (91 platform and derivatives)
FAW Jiefang series (J6, JH6, and other heavy duty models with compatible suspension)

Always confirm compatibility by checking the original part number WG9416520011 and comparing the old cover plate shape and bolt hole spacing before ordering. This part is typically left side specific; right side may have a different part number.

--- INSTALLATION NOTES ---

Raise the front axle and support the vehicle securely on jack stands. Remove the wheels if necessary for access.

Remove the U-bolt nuts and take off the U-bolts. Note the orientation and torque specifications for reassembly.

Remove the old spring cover plate. Clean the spring pack top surface and the axle mounting area.

Position the new cover plate on top of the spring pack. Ensure alignment pins or locators match the spring pack.

Install new U-bolts (recommended) or reuse old ones if in good condition. Apply anti-seize to threads if specified.

Torque the U-bolt nuts in a star pattern to the manufacturer's specification (typically 250 to 350 Nm depending on bolt size and vehicle model).

After installation, drive the vehicle for a short period and re-torque the U-bolt nuts as the spring pack settles.

Professional installation recommended due to critical safety nature of suspension components.

--- WHEN TO REPLACE ---

Replace the spring cover plate if you notice: visible cracks or deformation, corrosion pitting that reduces thickness, bent or warped plate surface, stripped or damaged bolt holes, or during routine spring pack rebuild or U-bolt replacement.

Inspection during every brake or suspension service is recommended.

--- PACKAGING AND DELIVERY ---

Packaging: Neutral carton with foam padding or bubble wrap
MOQ: 1 piece
Delivery Time: Regular orders within 24 to 48 hours. Bulk orders require 5 to 10 working days
Place of Origin: Shandong, China
Payment Terms: T/T, Western Union, PayPal
Shipping Terms: EXW, FOB Qingdao, CFR, CIF, DDU

--- CONTACT ---

Sales Manager: William
Phone / WeChat: +86 19050562894
Email: Sales22@chinatruck.cc
Company: Authorized commercial vehicle parts supplier

--- WARRANTY AND OFFERS ---

12 month warranty against manufacturing defects.
Free basic installation guidance (digital document) upon request.
Bulk order discounts available for 10 pieces or more.
Express shipping available for urgent replacement needs.
Free VIN based compatibility check before ordering.