Strap for Cosmograph Daytona Yellow Gold / Cerachrom / MOP-Diamond / Oysterflex

The lug width of the Rolex Daytona 116518LN-0037 is 20mm. This is the internal measurement between the two case lugs and determines the head width of any compatible strap. The tail typically tapers to 16mm to fit the original Rolex buckle or standard aftermarket clasps.

For a Daytona 116518LN-0037 with an 18-carat yellow gold case and mother-of-pearl dial, the most suitable materials are square-grain alligator in midnight blue or burgundy for an elegant contrast, or cognac-coloured calf leather or shell cordovan for a tone-on-tone harmony with the gold. A yellow gold deployant clasp completes the pairing without any visual discontinuity from the case.

To replace the strap on a Rolex Daytona 116518LN-0037, a dedicated springbar tool is required to release the spring bars securing the strap to the lugs. It is advisable to work on a soft surface to protect the gold case. For maximum precision and to avoid scratching the lugs, entrusting the operation to a watchmaker or the Casati Milano atelier is strongly recommended.

Yes, the Rolex Daytona 116518LN-0037 is compatible with aftermarket straps with a 20mm head width. Milano Straps handcrafted straps are made to precise measurements for this lug width, available in alligator, vegetable-tanned calf leather, shell cordovan and vulcanised rubber. It is important to verify that the strap's thickness profile is appropriate for a gold case to ensure a balanced fit.

The longevity of a leather strap depends on material quality and daily use. A high-quality alligator or vegetable-tanned calf leather strap, with proper care — avoiding prolonged exposure to water, perspiration and direct sunlight — can last between 2 and 5 years. Shell cordovan tends to have a longer lifespan due to its dense fibre structure. Rotating between two straps significantly extends the life of both.