Crankcase Ventilation Hose for Audi A3 & Volkswagen Golf 4 – 5637-008

<h2>Vehicle Fitment & Part Details</h2><p>This crankcase ventilation hose (5637-008) is listed for the Audi A3 and 9 further applications shown in the fitment data below, cross-referenced to OE 1J0 129 684 CD. Confirm compatibility by matching the listed fitment details and any OEM reference numbers supplied. Verify VIN/engine.</p><h3>Key Details</h3>SKU5637-008Alternate Search Reference5637008ComponentCrankcase Ventilation HosePrimary FitmentAudi A3 1.8T (1999-2003)<h3>Listing Highlights</h3><ul><li>Listed for selected applications shown in the fitment table.</li><li>Cross-referenced to listed OE numbers for compatibility checking before ordering.</li></ul><h3>Vehicle Fitment</h3><p>This crankcase ventilation hose is listed for 10 applications: Audi A3 1.8T, Volkswagen Golf 4 1.6i, Golf 4 1.6 Estate, Golf 4 1.8 GTI Turbo, Golf 4 1.9 TDi, Golf 4 2.0i, Jetta 4 1.6i, Jetta 4 1.8T, Jetta 4 1.9 TDI and Jetta 4 2.0i, with supplied year coverage across 1999-2005. Use the full table below to confirm model, year range and engine before ordering.</p><p>Primary OE references: 1J0 129 684 CD, 1J0 129 684 CG, 1J0 129 684 D, 1J0 129 684 N, 1J0 129 684 H.</p>View Full Vehicle Fitment (10 applications)<table><tr><th>Make</th><th>Model</th><th>Years</th><th>Engine</th></tr><tr><th>Audi</th><td>A3 1.8T</td><td>1999-2003</td><td>AGU, AUM</td></tr><tr><th>Volkswagen</th><td>Golf 4 1.6i</td><td>1999-2004</td><td>AKL</td></tr><tr><th>Volkswagen</th><td>Golf 4 1.6 Estate</td><td>1999-2004</td><td>AEH</td></tr><tr><th>Volkswagen</th><td>Golf 4 1.8 GTI Turbo</td><td>1999-2004</td><td>AGU</td></tr><tr><th>Volkswagen</th><td>Golf 4 1.9 TDi</td><td>1999-2004</td><td>AHF</td></tr><tr><th>Volkswagen</th><td>Golf 4 2.0i</td><td>1999-2004</td><td>APK, AZJ, AE</td></tr><tr><th>Volkswagen</th><td>Jetta 4 1.6i</td><td>1999-2004</td><td>AKL</td></tr><tr><th>Volkswagen</th><td>Jetta 4 1.8T</td><td>2003-2005</td><td>AGU</td></tr><tr><th>Volkswagen</th><td>Jetta 4 1.9 TDI</td><td>1999-2005</td><td>AHF</td></tr><tr><th>Volkswagen</th><td>Jetta 4 2.0i</td><td>1999-2005</td><td>APK, AZJ, AQ</td></tr></table><h3>Fitment Notes</h3><ul><li>Always match OEM reference number(s) and vehicle details before ordering. Verify VIN/engine.</li></ul><h3>OEM Reference Numbers</h3><ul><li><strong>Audi:</strong> 1J0 129 684 CD</li><li>1J0 129 684 CG</li><li>1J0 129 684 D</li><li>1J0 129 684 N</li><li><strong>SEAT:</strong> 1J0 129 684 H</li></ul><p><strong>Alternate OEM Search References:</strong> 1J0129684CD, 1J0129684CG, 1J0129684D, 1J0129684N, 1J0129684H</p><h3>Compatibility Verification Notes</h3><ul><li>Confirm compatibility using VIN, engine code, chassis / platform, OE reference and original part comparison before ordering.</li><li>Match the supplied fitment details to your vehicle, including model, year range and any listed engine or chassis information.</li><li>Fitment data may vary by production date, market, import history and engine variant.</li><li>This listing is for part identification and compatibility checking only. Installation must be carried out according to the vehicle manufacturer's service information by a suitably qualified person.</li></ul><h3>Common Questions</h3><p><strong>Will this crankcase ventilation hose fit my Audi A3?</strong><br/>This part (5637-008) is listed for the fitments shown on this page. Confirm by matching the fitment details. Verify VIN/engine.</p><p><strong>What OEM part numbers does this cross-reference?</strong><br/>Cross-reference numbers are listed in the OEM Reference Numbers section above. Match at least one to your original part before ordering.</p><p><strong>How do I confirm fitment if there are multiple variants?</strong><br/>Compare the supplied fitment details, OE reference numbers, original part details and any listed variant information before ordering. Verify VIN/engine.</p>