We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Brother BU635CL belt unit in green plastic housing

Brother

Brother BU635CL Belt Unit for HL-L8430, HL-L8570, MFC-L8730, MFC-L8930, MFC-L8970, MFC-EX575

SKU CH-W0VS-S3H6H

Genuine Brother belt unit maintains print quality for compatible HL and MFC colour laser printers

  • Genuine Brother part ensures reliable print quality
  • Compatible with HL-L8430 and HL-L8570 series printers
  • Supports MFC-L8730, MFC-L8930 and MFC-L8970 models
  • Works with MFC-EX575 multifunction devices
  • Manufacturer listed October 18, 2025

Genuine Brother BU635CL Belt Unit

The Brother BU635CL is a genuine replacement belt unit designed for specific Brother colour laser printers and multifunction devices. It maintains the transfer belt assembly that moves paper through the colour imaging process. Compatible models include the HL-L8430CDW, HL-L8430CDWT, HL-L8570CDW, MFC-L8730CDW, MFC-L8930CDW, MFC-L8970CDW and MFC-EX575. Buyers with other Brother or non-Brother machines cannot use this unit.

Replaces a worn or damaged transfer belt

Over time the transfer belt surface degrades, causing streaks, colour misregistration or repeated paper jams. Installing a new BU635CL restores consistent colour output and reliable paper feeding. The upgrade is worth it when print quality defects persist after cleaning or when the printer signals a belt-life warning. It does not address fuser, drum or toner-cartridge faults.

Limited to listed Brother colour laser models

This belt unit fits only the seven model series identified by the manufacturer. It is not compatible with monochrome Brother printers, inkjet models or colour lasers outside the 8430, 8570, 8730, 8930, 8970 and EX575 families. The part has no user-serviceable components and cannot be adapted for other devices.

Highlights

  • Genuine Brother part ensures reliable print quality
  • Compatible with HL-L8430 and HL-L8570 series printers
  • Supports MFC-L8730, MFC-L8930 and MFC-L8970 models
  • Works with MFC-EX575 multifunction devices
  • Manufacturer listed October 18, 2025

Specifications

BrandBrother
Shipping weight1.50 kg
Package size399 × 396 × 132 mm

Questions about this item

Does the BU635CL belt unit fit the HL-L8430CDWT and MFC-EX575 models?

Yes, the BU635CL is a genuine Brother belt unit compatible with the HL-L8430CDW, HL-L8430CDWT, HL-L8570CDW, MFC-L8730CDW, MFC-L8930CDW, MFC-L8970CDW and MFC-EX575.

How do I install the BU635CL belt unit and what step is often missed?

Open the front cover, pull out the toner cartridges and drum units, release the green lock lever, slide the old belt unit out, insert the new BU635CL until it clicks, reinsert the drums and toners, then close the cover; the step often missed is forgetting to reinstall all four drum units in their correct colour positions.

When will the BU635CL belt unit need replacement?

The printer will show a "Replace Belt" alert when the BU635CL reaches its rated life; replace it at that prompt to maintain consistent print quality.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.