D Ellington,
We do carry the maintenance kit for the UP6 series compressors. Ingersoll-Rand calls it the "start up" kit, but is also the maintenance kit for that compressor. The model number of the kit is 23352131 and the current price for that kit is $129.00 plus shipping. I have included a link below to the item's page on our web-site. Thank you.
Ingersoll Rand UP6 & R Series Rotary Air Compressor Start Up Kit (5-15HP)