A common cause of belt failure is a faulty or worn-out tensioner or idler. Replacing a timing belt typically requires 2-4 hours of labor. Changing the tensioner and idler at the same time does not add significant time to the job. The cost of the labor is approximately 2/3 the cost of the entire job.Hence, the added cost to change the additional components is not significant. As most newer applications are interference engines, if the belt fails, the valves will be damaged, requiring an expensive repair. Most technicians already understand the points just made. Research shows that among import specialists, technicians change the tensioner and idler roughly 80% of the time. Exhaust system orders may take an additional day for processing due to the complexity of the parts. Merchandise MUST be in new condition. Part must be new, uninstalled, in original box. Your own return desk 24/7. The item "1983-1986 Porsche 944 Timing Belt Kit With Your Original Water Pump" is in sale since Friday, June 26, 2015. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Engines & Components\Timing Components". The seller is "macautopartsdiscounts" and is located in Port Chester, New York. This item can be shipped to United States, to Canada, to United Kingdom, to Australia, to Mexico, to Germany, to Japan, DK, RO, SK, BG, CZ, FI, HU, LV, LT, MT, EE, GR, PT, CY, SI, to China, SE, KR, to Taiwan, ZA, TH, to Belgium, to France, to Hong Kong, to Ireland, to Netherlands, PL, to Spain, to Italy, to Austria, RU, IL, to New Zealand, PH, SG, to Switzerland, NO, SA, UA, AE, QA, KW, BH, HR, MY, TR, BR, CL, CO, CR, DO, PA, TT, GT, SV, HN, JM, ID.