Sonnax check balls 10000-12 (.218") are made out of tough, wear-resistant imidized plastic. The Sonnax imidized plastic balls seal better than steel balls because they conform to the separator plate ball seat. Steel check balls are hard and heavy, and wear separator plate ball seats from the repeated high impact of the ball on the seats. Elastomer or rubber check balls seal well. However, the elastomer material wears, reducing the size of the ball. Similar imidized plastic balls have been used on some original equipment late model valve bodies with excellent results. These imidized plastic check balls are not available through the original manufacturer.

Better check ball seal
Eliminate separator plate wear from steel balls
Eliminate elastomer rubber check ball wear

More From This Category

Motive Gear Differential Bearing Kit, Koyo, For OLDSMOBILE 442 1964–1971, Kit

Motive Gear Differential Bearing Kit, Koyo, For OLDSMOBILE 442 1964–1971, Kit

$149.22

Sonnax Aluminum Tubing, Drive Shaft Tube, 3.50" x 72" long Each

Sonnax Aluminum Tubing, Drive Shaft Tube, 3.50" x 72" long Each

$419.22

Wilwood Bearing Cup, Starlite Hub, Inner, Race

Wilwood Bearing Cup, Starlite Hub, Inner, Race

$20.04

Motive Gear Gear Install Kit, For Chrysler 7.25, Kit

Motive Gear Gear Install Kit, For Chrysler 7.25, Kit

$15.63

MANLEY Connecting Rod Pin Bushing, Bronze, .904 in. OD, .820 in. ID, .845 in. Length, Each

MANLEY Connecting Rod Pin Bushing, Bronze, .904 in. OD, .820 in. ID, .845 in. Length, Each

$22.80

TCI 700R4/4L60E Hd Drum 87-97

TCI 700R4/4L60E Hd Drum 87-97

$827.69