Tuff Torq K46 Transmission Fill Cap & Vent Cap Set — OEM replacement 187T0136300 + 168T2024250, exact-fit sealing and venting

Tuff Torq replacement fill cap (187T0136300) and vent cap (168T2024250) provide exact-fit, OEM-quality sealing and venting for most K46 hydrostatic transmissions.

These two genuine Tuff Torq service components—one fill cap (187T0136300, superseding 168T2036300) and one vent cap (168T2024250, superseding 19485924252)—are supplied new and bulk packed to restore proper fluid access and pressure relief on compatible K46 transmissions. They are manufactured to OEM specifications to match fitment, thread type, and material durability used in original equipment, helping maintain correct transmission fluid containment and venting performance when replacing worn or lost caps.

How do I know these caps fit my K46 transmission?

Fitment is determined by the transmission model and part number cross-references. The parts listed are direct Tuff Torq replacements and are compatible with most K46-series units, but you should verify against your machine’s parts list or owner’s manual before ordering.

• Includes fill cap 187T0136300 and vent cap 168T2024250
• Replaces older part numbers: 168T2036300 (fill) and 19485924252 (vent)
• Check your equipment parts diagram for K46 compatibility

What problems do these caps solve during service?

Replacing a damaged or missing fill cap prevents fluid leaks and contamination ingress, while a functioning vent cap maintains proper internal pressure and reduces premature seal wear. Together they help preserve transmission performance between routine services.

• Prevents debris and moisture from entering the fill port
• Restores correct venting to avoid pressure build-up
• Helps maintain fluid level accuracy during fills

How do I install the fill cap and vent cap correctly?

Installation is straightforward: clean the area around each port, thread the fill cap hand-tight until seated, and press or screw the vent cap into its port per the design. Always consult your machine’s service manual for torque specs and installation orientation to ensure a proper seal.

• Wipe mating surfaces clean before installation
• Hand-thread first to avoid cross-threading
• Follow owner’s manual for final torque and placement

Are these original equipment and what’s included in the pack?

Yes—these are genuine OEM Tuff Torq replacement parts supplied new in bulk packaging. The set contains one fill cap and one vent cap, ready to replace worn or missing originals during transmission service or repair.

• One 187T0136300 fill cap (new, OEM)
• One 168T2024250 vent cap (new, OEM)
• Bulk packed for service use or stocking

Who this is for: technicians, maintenance professionals, and equipment owners who service K46 hydrostatic transmissions and need exact-fit, OEM-grade caps to maintain fluid containment and pressure management. If you’re restoring serviceability after a lost or damaged cap, restocking parts for field repairs, or ensuring factory-correct replacements during rebuilds, this Tuff Torq fill and vent cap pair offers a straightforward, compatible solution—just confirm compatibility with your owner’s manual before installation.