Comp Cams 828-16 Solid Roller Lifters

If you to go the Summit racing site, the description of the 828-16 and the 8043-16 lifter sets are the same (see below). Both lifters have a 0.81" wheel.

Some of the differences between the two lifter sets are as follows:
- The 8043's have the pressure fed bearings. The 828's do not have pressure fed bearings.
- The lifter body shape difference between the two makes it appear that the 828's do not have a pressure feed. 828's have completely solid body while the 8043's have a recess in the body with the oil receiver hole.
- The 828's have the link bar on the back side of the lifter while the 8043's have the link bars on the inside or pushrod side of the lifter cup giving more clearance to the valley wall.
- The price. 828's are cheaper by $150 for the set

Summit Racing description for both sets

8043's description
"COMP Cams Endure-X roller lifters set the standard for solid roller lifter technology. The hydraulic roller lifters are designed with oiling and inboard link bars, they're engineered to withstand the demands of aggressive cam lobe designs and increased RPM ranges. The lifters feature a wear-resistant tool steel axle, precision sorted needle bearings, and most applications include EDM oil injection technology that guarantees the bearing assembly receives a constant flow of oil. Endure-X solid roller lifters are heat treated, machined to ultra-high tolerances, and fully rebuildable."

828's description
"COMP Cams Endure-X roller lifters set the standard for solid roller lifter technology. The hydraulic roller lifters are designed with oiling and inboard link bars, they're engineered to withstand the demands of aggressive cam lobe designs and increased RPM ranges. The lifters feature a wear-resistant tool steel axle, precision sorted needle bearings, and most applications include EDM oil injection technology that guarantees the bearing assembly receives a constant flow of oil. Endure-X solid roller lifters are heat treated, machined to ultra-high tolerances, and fully rebuildable"