Prefetching the data is a popular technique that improves data accessibility in wired or wireless networks. In mobile ad hoc networks(MANET), the possibility to improve the access latency and cache hit ratio may reduce due to the mobility of nodes and only limited cache space available in mobile hosts (MHs). To eliminate this problem in wireless networks, Global Cooperative Caching(GCC) with Image Prefetching (IP) algorithm is proposed that prefetches the image based on similarity measurement between data items and integrated with Gateway Selection Algorithm (GSA) for increasing throughput and reducing delay in the networks. Design implementation and analysis are done using Network Simulator 2(NS2) and MATLAB tool used to calculate the performance parameters of the proposed algorithm and also the parameters are compared with GCCIP to prove that proposed GCCIP-GSA algorithm have greatly improved the system performance in terms of packet loss, delay, throughput and resource utilization compared to existing schemes. Throughput analysis shows that GSA GCCIP results 13.63% higher throughput and 31.25% reduction in latency than conventional GCCIP. The Mean Square Error(MSE) and Peak Signal to Noise Ratio (PSNR) has been evaluated for different kind of images such as cameraman, lena, and baboon. In Proposed GCCIP-GSA, 28.8%, 23.75%, and 18.66% of MSE has been reduced compared to GCCIP for three different images respectively. At that same time, 60%, 55.6%, and 50% of PNSR has been improved in proposed method than conventional method.