Renault 21 Saloon & Estate Brake Wheel Cylinder Replacement – 7701032319

CM246

Item	Detail
Application	Renault 21 (B48_), Renault 21 Estate (K48_), Renault 21 Saloon (L48_)
OE No.	77 01 032 319, 77 01 067 937
Other Reference	CR.618 D
Bore Diameter	22.22mm
Mounting Size	Φ31.8/25/2-M6x1
Port/Connecting Size	M10 x 1.0, M7 x 1
Packaging	Neutral box or custom OEM/ODM branding
Certifications	ISO 9001, IATF 16949, VDA6

A Discontinued Platform That Still Needs Brake Parts
The Renault 21 was discontinued in 1994 for the saloon and hatchback, with the estate continuing until 1997. No factory production has existed for roughly three decades. That fact does not eliminate demand for brake parts — it shifts where that demand comes from. Dealer-network OEM supply for a vehicle this old is effectively gone, which means every Renault 21 still on the road depends entirely on the aftermarket and specialist classic parts suppliers for components like the XUI2828A-R wheel cylinder. For distributors, an old platform with no factory parts channel is precisely the gap that aftermarket manufacturing exists to fill.

Three Body Styles, One Wheel Cylinder
The application covers the Renault 21 saloon (L48_), estate (K48_) and the earlier B48_ chassis code, spanning 1986 to 1997 production. Renault built the saloon and estate as variants of the same platform, sharing the rear drum brake system across both body styles, which is why a single wheel cylinder specification — 22.22mm bore, Φ31.8/25/2-M6x1 mounting — covers the full range regardless of whether the vehicle left the factory as a four-door saloon or an estate wagon.

Reading the OE Reference List
The OE numbers for this part — 77 01 032 319 and 77 01 067 937 — both use Renault's "77 01" parts prefix, which the brand applied consistently across the Renault 21 generation, alongside the older 21 and its mechanical relative the Renault 25. CR.618 D is a separate aftermarket catalog code that several European brake parts suppliers use to cross-reference the same physical specification. A workshop or distributor checking any of these three numbers against a parts database will land on the identical wheel cylinder.

Why This Bore Size Matters
At 22.22mm, this is a larger bore than the 17.46mm wheel cylinder used on Renault's later Clio II and Logan platform, reflecting the heavier vehicle weight and larger drum diameter of the Renault 21 compared to Renault's later compact car range. Buyers should not assume bore sizes are interchangeable across different Renault model generations — confirming the OE number against the specific application remains the reliable method, particularly for a vehicle this old where multiple wheel cylinder variants may have existed across trim levels.

Who Stocks Parts for a Discontinued Model
The buyers for this part are specialist suppliers serving Renault enthusiast and classic car communities across Europe, plus independent workshops in markets where older Renault 21 units remained in everyday service well past their European retirement, including parts of North Africa and Eastern Europe. This is a lower-volume, steady-demand item rather than a high-turnover SKU — the kind of part that justifies its place in a catalog because no other current supply channel exists for it, not because it sells in bulk every month.
OEM/ODM private label packaging available for specialist parts distributors building a classic Renault catalog.

Confirming Fitment Before Ordering
Because the Renault 21 spans an eleven-year production run across three chassis codes, distributors should match B48_, K48_ or L48_ on the vehicle's documentation against this application before ordering rather than relying on the model name alone, since the 21 was sold across multiple trim and engine configurations that occasionally used different brake hardware.

Q1: The Renault 21 stopped production decades ago — is this part actually still in demand?
Yes. Discontinued vehicles with no remaining dealer parts channel rely entirely on aftermarket and specialist suppliers. Demand is lower-volume than for current models, but it is steady and has no other supply source.

Q2: Does the same wheel cylinder fit both the Renault 21 saloon and estate?
Yes — both body styles share the rear drum brake hydraulics, so the L48_ saloon and K48_ estate use the identical wheel cylinder specification.

Q3: Two OE numbers are listed — 77 01 032 319 and 77 01 067 937. Why two numbers for one part?
Renault used the "77 01" parts prefix across multiple production runs of the Renault 21, and the second number likely reflects a later catalog revision or supersession. Both cross-reference to the same physical specification.

Q4: Will a wheel cylinder from a newer Renault, like the Clio II, fit my Renault 21?
No. The Renault 21 uses a 22.22mm bore, larger than the 17.46mm bore on Renault's later Clio II and Logan platform. These are not interchangeable — always confirm against the OE number for your specific model.

Q5: Can this be supplied under our own brand packaging for a classic parts catalog?
Yes. Custom packaging, label printing and logo branding are available for OEM/ODM bulk orders.