General Engine Design Information 21 Engine Overview, VN D12D (Volvo V-Pulse) Right Hand View W2004343 1. EPG Air Supply Line 2. EGR Pipes 3. Wiring Harness Rail 4. EGR Cooler 5. Vibration Damper 6. Reed Valve Housing 7. Mixing Chamber 8. Pre-Heater (Optional) 9. EGR Valves 1 and 2 10. Shutter Housing 11. Block Heater 12. Air Compressor 13. Oil Filter Bypass 14. Oil Filter Full Flow 15. Oil Pan Heater (Optional) 16. Fast Lube Oil Change System (FLOCS) Optional (VN only) 17. Coolant Filter 18. Oil Pan (Plastic, VN Only)