211-843-423A VW Bus Upper Sliding Door Roller - 1968-1979 Type 2

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Sliding Door Upper Roller – 211-843-423A The 211-843-423A is an essential maintenance item for any Bay Window Bus owner. Because the sliding door is one of the heaviest moving part s on the vehicle, the upper roller serves as a critical guide to keep the top of the door aligned. When this roller fails, the door can sag or tilt outward, putting excessive strain on the center and lower hinges and potentially scratching your exterior paint. This roller is often referred to as the "upper front" or "upper support" roller and is compatible with both left and right-hand sliding door configurations. It is constructed from a high-density nylon or teflon material designed to withstand thousands of opening and closing cycles. Detailed Vehicle Compatibility VW Bus (Type 2 / Transporter): 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979 Product Highlights & Features Friction-Reducing Material: Self-lubricating properties of the nylon material help the door glide quietly through the steel upper track. Universal Fitment: Suitable for the upper sliding door bracket on all "Bay Window" generation Buses. OEM Quality: Sized exactly to factory specifications for a simple, drop-in replacement. Technical Specifications Part Number: 211-843-423A Outer Diameter: 20mm Position: Upper (Top) Support Material: High-Density Nylon / Plastic Installation & Maintenance Tips Track Cleaning: Before installing the new roller, use a cloth to wipe out any old, gritty grease or road debris from the upper door track. A clean track will significantly extend the life of the new nylon roller. Dry Lubricant: For the best results, use a "dry" PTFE or silicone-based spray in the upper track rather than heavy grease. Heavy grease tends to attract dirt which acts like sandpaper on plastic rollers. Full Service: If you are replacing the upper roller, it is best practice to also inspect the Sliding Door Center Hinge Bearing (211-843-359B) and the Lower Roller (211-843-438B) to ensure the entire door assembly is healthy. 211843423A Show more