BMW Differential bearing set Type K (E46, E39, E53)

<!-- split --> <h2 style="text-align: center;">BMW K Type Differential Bearing Replacement Kit (1999–2006) — E46, E39, E38 &amp; more</h2> <p>Upgrade and extend the life of your BMW’s differential with RacingDiffs’ <strong>K Type Differential Bearing Replacement Kit</strong>. Purpose-built for <strong>1999–2006</strong> BMW models using the <strong>K-type</strong> differential (common on E46, E39, E38, etc.), this kit provides all the key parts for a complete, reliable repair.</p> <style> /* Minimal, theme-friendly styling (optional) */ .rd-acc { margin: 0.6rem 0; border: 1px solid #e5e7eb; border-radius: 10px; } .rd-acc > summary { padding: 12px 14px; font-weight: 600; cursor: pointer; list-style: none; } .rd-acc > summary::-webkit-details-marker { display: none; } .rd-acc[open] > summary { border-bottom: 1px solid #e5e7eb; } .rd-body { padding: 12px 14px 14px; } .rd-table { width:100%;max-width:760px;border-collapse:collapse } .rd-table td { padding:6px 10px;border-bottom:1px solid #eee;vertical-align:top } </style> <!-- Features --> <details id="features" class="rd-acc"> <summary>Features</summary> <div class="rd-body"> <ul> <li> <strong>Bearing identification:</strong> Correct parts for 6-cyl <strong>188K</strong> and 8-cyl <strong>215/220K</strong> BMW models.</li> <li> <strong>OEM-quality components:</strong> Engineered for optimal fit, function, and longevity.</li> <li> <strong>Comprehensive kit:</strong> From crush sleeve shim to input/output seals—everything needed for a thorough repair.</li> <li> <strong>Guided support:</strong> <a href="https://racingdiffs.com/pages/video-gallery" title="RacingDiffs Installation tutorials" rel="noopener" target="_blank"><strong>Video gallery</strong></a> with installation tutorials for a hassle-free process.</li> </ul> </div> </details> <!-- Performance Benefits --> <details id="benefits" class="rd-acc"> <summary>Performance Benefits</summary> <div class="rd-body"> <ul> <li> <strong>Eliminates differential whine</strong> (on accel and coast).</li> <li> <strong>Restores smoothness</strong> and consistent power delivery.</li> <li> <strong>Prevents leaks</strong> and contamination with fresh seals.</li> <li> <strong>Extends differential lifespan</strong> when set up with proper preload/backlash.</li> </ul> </div> </details> <!-- Technical Specs / Installation Tips --> <details id="tech" class="rd-acc"> <summary>Technical Specs / Installation Tips</summary> <div class="rd-body"> <table class="rd-table"> <tbody> <tr> <td><strong>How to be 100% sure which kit to order</strong></td> <td>Use your VIN with <a href="http://bmwfans.info/parts-catalog" title="BMW Parts Catalog" rel="noopener" target="_blank"><strong>BMWFans.info</strong></a> (<a href="https://youtu.be/WCa7zL9vm7s" title="How to choose proper bearing repair set for your BMW differential" rel="noopener" target="_blank"><strong>video guide</strong></a> provided) to confirm differential type/size and bearing set.</td> </tr> <tr> <td><strong>Noise diagnosis tip</strong></td> <td>During a safe drive, gently steer left/right like warming tires. If noise <em>changes</em>, suspect a wheel bearing. If noise <em>stays constant</em>, differential bearings likely need replacement.</td> </tr> <tr> <td><strong>Backlash target</strong></td> <td> <strong>0.08–0.12 mm</strong> on most BMW ring-and-pinion sets (verify with a dial indicator at multiple positions).</td> </tr> <tr> <td><strong>Repair kit includes</strong></td> <td>1× Crush sleeve shim<br>1× Small pinion bearing<br>1× Large pinion bearing<br>1× Input flange oil seal<br>2× Output flange oil seal</td> </tr> <tr> <td><strong>Setup note</strong></td> <td>Use correct carrier <a href="https://racingdiffs.com/collections/differential-tuning-parts/products/bmw-differential-backlash-adjustment-c-clip-set" title="BMW Differential Backlash adjustment C clip (snap ring) set (Year 2000+)" rel="noopener" target="_blank"><strong>shims </strong></a>to set preload/backlash; verify contact pattern with marking compound and adjust as needed.</td> </tr> </tbody> </table> </div> </details> <!-- Fitment (simple list) --> <details id="fitment" class="rd-acc"> <summary>Fitment</summary> <div class="rd-body"> <ul> <li> <strong>3 Series:</strong> E46</li> <li> <strong>5 Series:</strong> E39</li> <li> <strong>7 Series:</strong> E38 (late models), E65, E66, E67</li> <li> <strong>X3:</strong> E83</li> <li> <strong>X5:</strong> E53</li> <li> <strong>Z Series:</strong> E85, E86</li> </ul> <p><em>*If your exact year/market is not listed, contact us to confirm K-type compatibility.</em></p> </div> </details>