Blue Line GY6 Short Case CVT Engine Cover Gasket
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Stop gear oil leaks and protect your drivetrain with the Blue Line GY6 Short-Case Transmission Cover Gasket. Precision die-cut from oil-resistant sealing material, this OEM-equivalent gasket spans the final drive gearbox cover interface on short-case GY6 125cc, 150cc, and 169cc 4-stroke engines. An 8-hole mounting pattern aligned to factory casing tolerances ensures a flush, airtight seal that holds up to thermal expansion, mechanical shear, and modern synthetic gear oils.
Key Features
- Oil-Resistant Material: Formulated to resist degradation from gear oils, high operating temperatures, and road grit.
- Precision Die-Cut: 8-hole pattern matches factory casing tolerances exactly — no binding or tearing during assembly.
- Even Compression: Compresses uniformly under standard torque specs to seal minor surface imperfections on cast aluminum engine halves.
- OEM-Equivalent Fit: Direct drop-in replacement when factory parts are unavailable or during a full rebuild.
Technical Specifications
- Overall Length: 410mm (16.15")
- Mounting Holes: 8
- Engine Type: 4-stroke GY6 air-cooled, short-case (10" rear wheel)
- Position: Left crankcase / final drive cover interface
- SKU: 1100-1136
Compatibility
Fits short-case GY6 engines only (10-inch rear wheel platforms). Will not fit long-case engines (12–13-inch wheel setups). Always measure your transmission cover length before ordering.
| Engine Code | Alternate Codes | Application |
|---|---|---|
| 157QMJ / 1P57QMJ | BN157QMJ, JJ157QMJ | Standard 150cc horizontal 4-stroke scooter |
| 152QMI / 1P52QMI | 1P52FMI, 154FMI | 125cc short-case layout |
| 161QMK / 1P61QMK | BN161QMK-A | 169cc / 170cc Chinese clone variants |
Installation Tips
- Clean both mating aluminum surfaces completely — remove all old gasket material, silicone sealant, and oily film. Use a plastic scraper to avoid gouging the soft aluminum.
- Tighten gearbox casing bolts in a crisscross star pattern to factory inch-pound specs for uniform gasket compression.
About Blue Line
Blue Line supplies OEM-equivalent replacement parts for Chinese-manufactured scooters and ATVs, offering reliable fitment at an accessible price point. Their gaskets are a trusted choice for independent shops and DIY mechanics working on GY6-platform vehicles.
Shipping information
Orders are prepared as quickly as possible. Delivery times and shipping costs are calculated at checkout based on the destination and items ordered.
Returns & warranty
Please verify fitment and part number before ordering. Contact Thrifty Scooters promptly if an item arrives damaged or incorrect.