3-D BullsEye

SKU: 3d-bullseye

Quick Overview

The 3-D BullsEye is the perfect solution for a quick, 360° view of oil level.  Engineered to outperform and outlast traditional viewports, the inherently strong material provides excellent impact, chemical and UV resistance.

Price from:
As low as $29.82

Originally made from cast acrylic, the 3-D BullsEye has been redesigned to improve durability and usability in the field.  The 3-D BullsEye is now made made from a UV resistant polyamide material which has enhanced performance compared to the conventional acrylic product. In addition to providing improved strength, durability and chemical resistance, the polyamide has permitted change in the way the 3-D BullsEye is manufactured from machined to injection molded.  As a result, the 3-D BullsEye is now 10-50% thinner depending on product number, but with increased strength and viewing area. 

New design features also include ribs evenly distributed on the circumference of the body can be used to better grip the 3-D BullsEye during installation and can be aligned with the oil level for more accurate level checks.  Easily installed by wrapping the threads with Teflon tape, the 3-D BullsEye provides constant oil monitoring from any angle. 


Pumps, Gearboxes, Viewport Replacement


  • Offered in NPT, Metric, & BSPP Sizes
  • Replaces brass & glass, flush-mounted sight windows for better viewing
  • See FAQs  for more information


  • Transparent Polyamide
  • Brass Fittings standard on 1/4", 3/8" NPT, M10X1.0, M10X1.5, and M12X1.5
  • M10X1.0, M10X1.5, and M12X1.5 include a gasket and lock ring combination for proper sealing
  • All metric sizes larger than M12X1.5 include an O-ring and retaining washer for proper sealing

Recommended Temperature Range

  • -40F to 200F
  • -40C to 93C

Maximum Operating Pressure

  • 65 psi at 200F
  • 4.48 bar

Chemical Compatibility

  • All gear, mineral and synthetic oils

Available Options

  • NPT, Metric, BSPP Threads
3-D BullsEye SizesDimensionsPart #
1/4" NPT1.00" OD, 1.375" L3DB0250
3/8" NPT1.125" OD, 1.375" L3DB0375
1/2" NPT0.875" OD, 1" L3DB0500
3/4" NPT1.125" OD, 1.375" L3DB0750
1" NPT1.375" OD, 1.375" L3DB1000
1 1/4" NPT1.75" OD, 1.375" L3DB1250
1 1/2" NPT2" OD, 1.375" L3DB1500
2" NPT2.50" OD, 1.50" L3DB2000
3-D BullsEye Metric Sizes Dimensions Part #
M10 X 1.0 .875" OD, 1.00" L3D 3BM10X10
M10 X 1.5 .875" OD, 1.00" L 3DBM10X15
M12 X 1.5 .875" OD, 1.00" L 3DBM12X15
M16 X 1.5 1" OD, 1" L 3DBM16X15
M20 X 1.5 1.25" OD, 1.062" L 3DBM20X15
M22 X 1.5  1.25" OD, 1.062" L 3DBM22X15
M24 X 1.5 1.375" OD, 1.125" L 3DBM24X15
M26 X 1.5 1.50" OD, 1.187" L 3DBM26X15
M27 X 1.5 1.50" OD, 1.187" L 3DBM27X15
M30 X 1.5 1.75" OD, 1.25" L 3DBM30X15
M30 2.0 1.75" OD, 1.25" L 3DBM30X20
M33 X 1.5 1.75" OD, 1.25" L 3DBM10X15
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