NapaGold HD Oil Filter vs Caterpillar HD Oil Filter Comparison

• Caterpillar was the only filter to not use a coil spring.
• The Caterpillar filter’s element was glued to the base.
• Caterpillar uses rubber end caps.
• The inside tube was plastic.
• The media was not only tied together with a spring, but an epoxy was used to ensure the media pleats stayed separated.
• The Caterpillar filter base had group holes separated by a metal fin that evenly distributes the oil flow.

NOTES:

• The Caterpillar was the lightest of the HD filters.
• The Caterpillar was the widest of the HD filters.
• The Caterpillar had 10 holes for flow, but also had the largest diameter holes.
• Caterpillar filters were the only to use a rubber base, rather than metal.
• Caterpillar had the most number of pleats.
• The Caterpillar filter was the only to use a plastic inner tube.