This two-sided Mega Kit contains Volvo kits #15155158, #11708294 , #63049, #14511214 and other high-usage standard and metric o-rings. CONTENTS OF KIT: 7 sizes Ors (flat face) o-rings, 10 sizes 37 degree o-rings, 9 sizes Boss o-rings, 6 sizes flange o-rings, 34 sizes standard and metric o-rings. Meets or exceeds OEM specifications. OEM part numbered for easy reference. We promise to provide the best, highest quality o-rings and kits available at a fair price. Our o-rings will meet or exceed OEM specifications and we'll get them to you as fast as we possibly can.