Pistons, Rings, Wrist Pins, Bushings & More

Piston Oil Ring Spacers, United Engine and Machine Oil Ring Support Rails, 4.040 in. Bore, 3.615 in. Ring I.D., Each

Part Number: UEM-R08

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Piston Oil Ring Spacer, 4.000 in. - 4.040 in. Bore, Each

Part Number: MLE-09290024

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Piston Oil Ring Spacer, Support Rail, 4.020 in.-4.035 in. Bore, 2mm Thick, Each

Part Number: MLE-1979645

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Oil Rail Support, Dimpled, 4.038 in. up to 4.075 in. Bore, Each

Part Number: WIS-GLS26

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Oil Ring Support Rail, 4.250 in.-4.310 in. Bore, 3/16 in. Thickness, Each

Part Number: MLE-9290040

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Oil Rail Support, Dimpled, 4.155 in. up to 4.193 in. Bore, Each

Part Number: WIS-W4956

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Oil Ring Support Rails, 4.125 in-4.185 in. Bore, 3.mm, Each

Part Number: MLE-9290032

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Oil Rail Support, Dimpled, 4.030 in. up to 4.059 in. Bore, Each

Part Number: WIS-W4954

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Oil Rail Support, Dimpled, 4.290 in. up to 4.350 in. Bore, Each

Part Number: WIS-W5159

5.0 out of 5 stars ( 1 )

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Piston Oil Ring Spacer, Support Rail, 3.898 in.-3.947 in. Bore, 2mm Thick, Each

Part Number: MLE-9301947

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Oil Rail Support, Dimpled, 4.375 in. up to 4.405 in. Bore, Each

Part Number: WIS-W5110

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 3.759 in. up to 3.790 in. Bore, Each

Part Number: WIS-GLS5

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 3.970 in. up to 4.029 in. Bore, Each

Part Number: WIS-W4953

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Oil Rail Support, Dimpled, 4.121 in. up to 4.154 in. Bore, Each

Part Number: WIS-W4955

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 3.480 in. up to 3.550 in. Bore, Each

Part Number: WIS-GLS8

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, 3.365 in. up to 3.406 in. Bore, Each

Part Number: WIS-GLS33

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 4.000 in. up to 4.037 in. Bore, Each

Part Number: WIS-GLS25

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Piston Oil Ring Spacer, Support Rail, 4.080 in.-4.120 in. Bore, 2mm Thick, Each

Part Number: MLE-9301922

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Oil Rail Support, 3.923 in. up to 3.946 in. Bore, Each

Part Number: WIS-GLS19

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 4.081 in. up to 4.120 in. Bore, Each

Part Number: WIS-W5161

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, 3.465 in. up to 3.510 in. Bore, Each

Part Number: WIS-GLS35

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 3.870 in. up to 3.935 in. Bore, Each

Part Number: WIS-W5162

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 4.060 in. up to 4.080 in. Bore, Each

Part Number: WIS-W5080

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Estimated Ship Date: May 11, 2026 if ordered today

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Oil Rail Support, Dimpled, 4.114 in. up to 4.151 in. Bore, Each

Part Number: WIS-GLS28

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Oil Rail Support, Dimpled, 3.795 in. up to 3.845 in. Bore, Each

Part Number: WIS-W5347

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