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Auto Spare Parts Engine Underguard OE 30793870 Underbody Protection Plate for Volvo
The Engine Underguard (Underbody Protection Plate) (OE Number: 30793870) is a critical underbody component for Volvo sedans, estates, hatchbacks, and convertibles. Installed directly beneath the engine bay, it acts as a rigid shield between the vehicle’s engine, transmission, and other underbody parts (e.g., oil pans, fuel lines) and road hazards—such as rocks, curbs, debris, or uneven pavement. Its core role is to prevent direct impact damage to vulnerable engine components, while also reducing the accumulation of mud, water, and road salt on underbody parts to slow corrosion.
This OE-grade underguard features a heavy-duty, impact-resistant construction:
Material: Typically high-strength steel (with electrophoretic anti-corrosion coating) or reinforced thermoplastic (for lighter models). Steel variants offer maximum impact protection (ideal for rough roads), while thermoplastic balances durability with weight savings—both materials resist bending, cracking, and rust from road salt/rain.
Precision Design: Molded or stamped to match the underbody contour of specific Volvo models, with pre-drilled mounting holes that align with factory chassis brackets. Unlike generic underguards, it eliminates gaps (which let debris enter) or misalignment (which causes wind noise at high speeds) and fits tightly without interfering with underbody components (e.g., exhaust systems, suspension parts).
Aerodynamic Optimization: The surface is shaped to reduce air resistance under the vehicle, minimizing wind drag and improving fuel efficiency—an often-overlooked benefit compared to unoptimized aftermarket guards.
Core Functions
Shield Engine & Underbody Parts: Absorbs or deflects impacts from road hazards (rocks, curbs, pothole debris) to prevent damage to the engine oil pan, transmission case, fuel lines, and wiring harnesses—costly repairs that can disable the vehicle.
Reduce Corrosion: Blocks direct contact between road salt, mud, and water and underbody metal parts, slowing rust formation and extending the service life of engine and chassis components.
Minimize Wind Noise & Improve Aerodynamics: The contoured design reduces turbulent air flow under the vehicle, lowering road noise at high speeds and slightly improving fuel efficiency by reducing drag.
Compatible Vehicles
Applicable Models
Applicable Years
S40 (04-)
2004–2012
V50
2004–2012
C30
2007–2013
C70 (06-)
2006–2013
*For 100% fitment accuracy:
Confirm the vehicle’s underbody configuration via VIN—variants with different exhaust systems or optional underbody components (e.g., skid plates) may require specific underguard designs, and this OE part is calibrated for factory specs.
Reference the vehicle’s official service manual to verify mounting hardware (bolts, clips) and torque specifications—loose mounting can cause the underguard to rattle or shift, while over-tightening may strip chassis threads.
After installation, inspect for clearance with moving parts (e.g., suspension, exhaust) to ensure no contact during driving—contact can cause noise or premature wear on both the underguard and the component.*
Frequently Asked Questions
Q: How to determine if the bumper bracket needs replacement?
A: Signs of a failing bumper bracket include visible damage or deformation, misaligned bumper panels, unusual noises from the front end, or if the bumper appears loose or sagging on one side.
Q: What should be paid attention to when replacing the bumper bracket?
A: For optimal results, we recommend professional installation. Key considerations include ensuring proper alignment of all mounting points, checking for additional damaged components, and verifying all fasteners are properly torqued to specification.
Why Choose Our Products
Extensive Industry Experience: 13 years specializing in Volvo auto parts with precise product matching and technical solutions.
Quality Assurance: 10-stage quality inspection process including durability testing, surface roughness analysis, and dimensional verification.
Manufacturing Excellence: 15,000㎡ production base with 10,000+ SKUs in inventory for fast order fulfillment.
Strategic Partnerships: Collaborations with 50+ factories including suppliers to international brands like Bosch and Hella.
Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop... Company Profile
Established in Guangzhou China, Womala Auto parts as a comprehensive company with five branches has engaged in Volvo parts for more than 10 years.There are hundreds of professional staff working in our supply department, sales and logistic support departments.Thanks to the deep coop...
