Blue Line
Blue Line Engine Case Set - 139QMB / CSC go.
Description
This Blue Line short engine case set gives your 139QMB engine rebuild a fresh foundation when damaged cases put your scooter out of action. The matching left and right engine case halves are for the CSC go. and compatible short-case 139QMB 50cc four-stroke scooters with 10-inch wheels. Supplied as a matched pair, they let you replace the engine housing together rather than mix unmatched case halves.
Key Features
- Matched case pair: Includes the left and right engine case halves for a coordinated housing replacement.
- Short case for 10-inch wheels: For the short-case 139QMB layout used on 10-inch-wheel scooters, not a long-case replacement.
- CSC go. application: Replacement case set for the Chicago Scooter Company go. and matching 139QMB engines.
- Rebuild foundation: Replaces the engine housing while allowing serviceable engine components to be transferred during assembly.
Technical Specifications
- Brand: Blue Line
- Part number: 1100-4061
- Part type: Matched engine case set
- Included components: Left and right engine case halves
- Engine platform: 139QMB / QMB139, 50cc four-stroke
- Case configuration: Short case
- Wheel application: 10-inch wheels
- Application: CSC go. and matching short-case 139QMB configurations
Compatibility
| Application | Configuration requirement |
|---|---|
| Chicago Scooter Company go. | Short-case 139QMB engine, 10-inch wheels |
| Other 139QMB / QMB139 50cc four-stroke scooters | 10-inch wheels and matching short-case layout, mounting points, and component interfaces |
Confirm that your engine uses the short-case configuration for 10-inch wheels before ordering. Match the original engine mounting points, crankshaft and cylinder interfaces, final-drive layout, and cover mounting pattern. Wheel size and the 139QMB engine code alone do not establish interchangeability with every case configuration.
This is an engine case set, not a complete engine. Inspect transferred components and follow the engine service procedure for assembly, seals, gaskets, clearances, and lubrication.
Product Diagrams
Features
Specifications
Brand: Blue Line; Part number: 1100-4061; Type: Matched engine case set; Includes: Left and right engine case halves; Engine: 139QMB / QMB139 50cc four-stroke; Configuration: Short case; Wheel application: 10-inch wheels; Application: CSC go. and matching short-case engines; Not a complete engine
Model Fitments
CSC go.; compatible short-case 139QMB / QMB139 50cc four-stroke scooters with 10-inch wheels and matching mounting points, crankshaft and cylinder interfaces, final-drive layout and cover pattern; not a long-case replacement
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
