Parker Vibra-Lok Compression Coupling Union Fitting Brass 3/8 Inch x 3/8 Inch
Join two 3/8-inch oil or fuel lines without worrying about vibration working the connection loose. Parker Vibra-Lok coupling unions use an elastomeric sleeve on each end to cushion the tubing and maintain a positive seal under the constant vibration, mechanical shock, and tube movement present on running motorcycles.
Key Features
- Joins two 3/8-inch OD tubes inline, ideal for splicing lines or extending existing oil and fuel line runs
- Vibra-Lok sleeves on both ends eliminate micro-leaks caused by vibration in metal-on-metal compression connections
- Brass body for corrosion resistance in oil, fuel, and coolant applications
- Symmetrical tube-to-tube design, same tube OD accepted on both sides
Technical Specifications
- Body Material
- Brass
- Shape
- Straight coupling (union)
- Connection 1 (Compression)
- 3/8-inch tube OD
- Connection 2 (Compression)
- 3/8-inch tube OD
- Style
- Tube to Tube
Fitment Notes
- Both ends accept 3/8-inch OD tubing, tubing OD must match exactly on both sides
- No NPT threads, this is a tube-to-tube fitting; not for threading into engine cases or petcocks directly
- Replace Vibra-Lok sleeves (60VL-6 Buna-N or 60VLV-6 Viton) separately if sealing performance deteriorates


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