Dipper Cylinder Base End Bushing for Cat 420E 428E 432E 434E 444E | 215-1906

Fits Models At A Glance:

• Caterpillar Backhoe Loaders - E Series: 420E, 422E, 428E, 432E, 434E, 442E, 444E
• Caterpillar Backhoe Loaders - F Series: 420F, 422F, 428F, 432F, 434F, 444F

Serial Number Notes:

• Check the three character prefix on your machine data plate: the models below split by prefix
• 420E: KMW, HLS, PHC, PRA, DAN, DJL
• 420F: SKR on the standard machine, JWJ on the integrated toolcarrier, LKH
• 422E: MAW
• 428E: DPH, DXC, SNL
• 432E: JBA, BXE, RXS
• 434E: SEF, SJL, SXB, FSH
• 442E: EME
• 444E: NBA
• F Series prefixes not listed above: Caterpillar does not publish a single consolidated prefix table for the 422F, 428F, 432F, 434F and 444F. Check the data plate against your parts book.
• Not the boom cylinder bushing: The boom cylinder's base eye on the same pin takes 212-8960 - identical bore and outside diameter, 47 mm long against this part's 35 mm. Two different cylinders, two different bushings, one shared pin.

Key Notes:

• Part Number: 215-1906 (Caterpillar reference 215-1906)
• Weight: 0.93 lbs
• Application: Dipper cylinder base end - the bushing inside the base eye of the dipper cylinder, where it pins into the boom. Caterpillar's own name for this part is a sleeve bearing for the cylinders in the stick.
• Location: Backhoe end, inside the dipper cylinder base eye. Three bushings share the pin at this joint - this one in the dipper cylinder, 212-8960 in the boom cylinder, and 220-1012 in the boom weldment itself.
• Dimensions: 70.33 mm inside diameter, 83.135 mm outside diameter, 35 mm long
• Measure Before Ordering: Two other Caterpillar bushings share this exact 70.33 mm bore and 83.135 mm outside diameter - 212-8960 is 47 mm and belongs in the boom cylinder, 220-1012 is 49 mm and belongs in the boom casting. This one is the shortest of the three at 35 mm.
• Style/Type: Straight steel sleeve
• Quantity: Sold individually. Count the bores in your cylinder eye.
• Interchange Numbers: Sits on Caterpillar linkage pin 213-6693
• Serial Number Notes: Confirm your data plate prefix against the list above.
• Material: Steel, low alloy
• Condition: Aftermarket replacement part
• Shipping Restrictions: Ships within the lower 48 United States only

Common Use Case or Symptoms:

Use when the dipper cylinder knocks at its base pin, when the crowd stroke feels loose at the start of a pull, or when the base eye has begun to wear oval. The dipper cylinder does the hardest work on the machine and this eye takes the reaction load every time the bucket loads up.

Why Choose Broken Tractor?

• ✅ Dipper Cylinder Not Boom Cylinder: Both cylinders anchor on the same pin and their bushings measure the same bore. Length is the difference, and this is the 35 mm one.
• ✅ Shortest Of Three On One Pin: 35 mm here, 47 mm in the boom cylinder, 49 mm in the boom casting. All three numbers are on this page so the right one goes in the box.
• ✅ Weight Recalculated From Cat Dimensions: The vendor figure of 0.10 lb is lighter than water for a solid steel sleeve. We recomputed it from Caterpillar's own bore and length and listed it at 0.93 lb.