Womala Air Intake OE 31319357 Top Intake Port for Volvo V40 2013-2015 Auto Parts

Core Functions

• A. Air Delivery for Combustion

  • Precision Air Routing: The intake port’s smooth, contoured internal design minimizes airflow resistance, guiding a steady, uniform stream of filtered air from the air filter housing to the throttle body. This ensures the engine receives the exact volume of air required for optimal combustion (air-fuel ratio ~14.7:1 for petrol engines), directly influencing power output and fuel efficiency. Without a properly designed port, restricted airflow can cause “lean” or “rich” fuel mixtures—leading to reduced acceleration, increased emissions, or engine knocking.
  • Heat Insulation: HDPE’s low thermal conductivity acts as a barrier against under-hood heat (from the engine block, exhaust manifold, or radiator). This prevents hot air from being drawn into the combustion chambers—hot air is less dense, containing fewer oxygen molecules, which would otherwise reduce combustion efficiency. By maintaining cooler intake air temperatures, the port helps preserve the engine’s peak performance (especially critical for turbocharged V40 variants, where cool air maximizes turbo boost effectiveness).

  B. System Sealing & Protection

  • Air Tightness: The intake port features precision-molded rubber gaskets at its connection points (to the air filter housing and throttle body). These gaskets create an airtight seal, preventing unfiltered “dirty air” (containing dust, debris, or road particles) from entering the engine. Unfiltered air causes premature wear to piston rings, valves, and cylinder walls—leading to costly engine repairs.
  • Debris Shielding: The port’s rigid structure and sealed design protect the internal airflow path from external debris (e.g., loose hoses, small engine components) that could block or damage the intake system. Its shape also avoids “dead zones” where debris might accumulate, ensuring consistent airflow over time.

  C. Compatibility with Engine Controls

  • Sensor Integration: For V40 models equipped with mass airflow sensors (MAF) or intake air temperature (IAT) sensors, the port features pre-molded mounting points or openings that align with these components. This ensures accurate sensor readings—critical for the engine control unit (ECU) to adjust fuel injection and ignition timing in real time. Mismatched ports can disrupt sensor alignment, leading to incorrect ECU adjustments and poor engine performance.

Compatible Vehicles

This Air Intake / Top Intake Port (OE: 31319357) is exclusively tailored for Volvo’s compact V40 lineup, including both standard and Cross Country variants. Below is a consolidated list of models and applicable years:

Notes: “V40 (13-)” denotes the second-generation V40 (launched in 2013), which shares identical intake system architecture with the V40 Cross Country. For 100% fitment accuracy—especially to match engine variants (e.g., 1.6L T3 vs. 2.0L T5 turbo petrol)—confirm compatibility with your vehicle’s VIN (Vehicle Identification Number) or Volvo’s official service manual.

• 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.