Hello i want to replace my timing chain tensioner on my
2002 ford explorer sport 4.0 4wd.
and i was wondering, i want to buy the part off of ebay and i wanted to see which brand is better,
Aftermarket OE Replacement Part or engine pro brand, the reason i want to get it for ebay is because at the stores it cost close to 75 for one. here are the links of the items. and will these ware out faster then buying the ones from the actual store-stores sell OEM standard grade.. so im trying to find out if i should get the engine pro or the Aftermarket OE Replacement Part brand... and will they brake faster then the original OEM standard grade ones you get from like actual stores like autozone and stuff like that? So which one should i get?

Engine pro-brand- http://www.ebay.com/itm/97-10-FORD-M...e593da&vxp=mtr

Aftermarket one- http://www.ebay.com/itm/Engine-Timin...3dca40&vxp=mtr