Short Description: Ensure your transmission remains leak-free and properly lubricated with this precision-engineered gearbox seal set. Essential for maintaining the longevity of your gears and preventing costly internal damage caused by oil loss.

Technical Specifications:

• Compatibility: Dnepr MT-11 and compatible KM3 series motorcycles.
• Manufacturer Code / SKU: КМЗ-8.15204156 (7204151)
• Part Type: Transmission / Sealing System

Purpose and Role in the Motorcycle (based on the original manual):
The Dnepr MT-11 utilizes a heavy-duty, double-shaft four-speed gearbox with a reverse gear that requires a constant oil level (1.5 liters) to lubricate high-friction components, including the primary shaft, secondary shaft, and metal-ceramic bushings. This set of seals (glands) acts as the primary barrier against oil leakage and the ingress of external contaminants. Specifically, these seals are critical for the primary shaft—where "oil leakage along the splines" is a common failure point—and the secondary shaft, which uses a double-edge carcass-type gland to maintain pressure. When these seals wear out, you will notice oil spotting around the gearbox casings or a drop in oil levels on the dipstick. Failure to replace worn seals leads to premature wear of the gears and can cause overheating of the thrust bearings.

Benefits of Buying:

• Exact match to factory specifications: OEM standard dimensions (20x34 and 16x30) ensure a perfect, airtight fit without the need for modifications.
• Enhanced Transmission Life: By preventing oil leaks, you ensure that your gearbox maintains the required lubrication to prevent gear "howling" and premature wear.
• Complete Restoration Kit: Provides all necessary seals for the gearbox in one package, simplifying the overhaul process and reducing motorcycle downtime.