Overview – BLOCK ASSY-BRUSH 212-1303
212-1303 is the brush block assembly used on CUMMINS Onan RV generator sets to carry the carbon brushes that transfer current to the rotating field. We can supply this brush block as well as the related generator service parts, in stock or available on order – welcome to enquire by part number.
Parts Characteristics
The assembly is built to the original brush holder design, with the molded holder, springs and brush guides matched to the generator slip ring diameter. The two carbon brushes are fitted with copper leads and ride under spring pressure so contact with the slip rings is maintained throughout brush wear. The holder locates on the original mounting point without modification. As an OEM-spec assembly, it drops into the generator end bracket as a direct fit.
Applicable Models & Applications
This brush block assembly is used on CUMMINS Onan RV generator sets where the alternator field current is transferred through slip rings and brushes. Typical applications include the Onan generator models fitted with the original 212-1303 brush block. Confirm the holder shape, brush size and lead length against the assembly removed from your generator before ordering.
Maintenance & Replacement
Worn brushes show up as erratic output voltage, arcing at the slip rings and reduced generator performance. Inspect the brushes and springs whenever output problems appear, looking for short brushes, worn lead connections and sticking brush guides. When replacing, clean the slip rings, fit the new brush block on the original mounting, and confirm the brushes seat squarely before closing the generator.
Price Reference (USD)
The reference price for this BLOCK ASSY-BRUSH (212-1303) is approximately USD 25 – 140 per unit depending on grade, quantity and shipping destination. This is a planning estimate only – confirm current pricing and availability with our sales team before ordering.
Value & Service
Arcing brushes can burn the slip rings and kill the generator output, so we verify 212-1303 against the original CUMMINS Onan holder and brush specification before dispatch. We stock the brush block together with the slip ring cleaning kit and voltage regulator parts, and they can ship in one tracked order. Our team will confirm the correct assembly for your generator model before you buy.
Racer Machinery is a dedicated construction-machinery parts supplier – send us your part number and generator model, and we will confirm fitment, price and lead time for this brush block and related CUMMINS generator components.
