G-Mark 45 All Models Replacement RC Nitro Engine Parts

A selection of replacement parts for G-Mark. These parts are not original parts unless otherwise stated in the descriptions. Please check your choices thoroughly.

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Replacement Parts Price Quantity
Single Row Ball Bearings - 7x13x4 mm - Chrome Steel SAE 52100 - Replaces -
BB 7-13-4
Replacement Bearing - Standard Bearing Shielded Option
Double shielded standard bearing

MR137A-ZZ-MC3 (Each)
Double shielded standard bearing

Single Row Ball Bearings - 7x13x4 mm Unflanged - Chrome Steel SAE 52100 Bearing

$4.77
200 Available Now -> Orders for more than 200 can be expected around Aug 19, 2026
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Single Row Ball Bearings - 7x13x4 mm - Stainless Steel AISI 440C - Replaces -
BB 7-13-4
Replacement Bearing - Stainless Bearing Shielded Option
Double shielded standard stainless steel bearing

SMR137A-ZZ-MC3 (Each)
Double shielded standard stainless steel bearing

Single Row Ball Bearings - 7x13x4 mm Unflanged - Stainless Steel AISI 440C Bearing

$6.14
85 Available Now -> Orders for more than 85 can be expected around Aug 19, 2026
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Single Row Ball Bearings - 9x17x4 mm - Chrome Steel SAE 52100 - Replaces -
BB 9-17-4
Replacement Bearing - Standard Bearing
Open standard bearing with low-torque light oil lubricant

689-MC3-AF12 (Each)
Open standard bearing with low-torque light oil lubricant

Single Row Ball Bearings - 9x17x4 mm Unflanged - Chrome Steel SAE 52100 Bearing

$4.77
200 Available Now -> Orders for more than 200 can be expected around Aug 19, 2026
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Single Row Ball Bearings - 9x17x4 mm - Stainless Steel AISI 440C - Replaces -
BB 9-17-4
Replacement Bearing - Stainless Bearing
Open standard stainless steel bearing

S689-MC3-AF12 (Each)
Open standard stainless steel bearing

Single Row Ball Bearings - 9x17x4 mm Unflanged - Stainless Steel AISI 440C Bearing

$3.77
109 Available Now -> Orders for more than 109 can be expected around Aug 19, 2026
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