Okla. Stat. tit. 12A, § 12A-2-725: Statute of Limitations in Contracts for Sale

(1) An action for breach of any contract for sale must be

commenced within five (5) years after the cause of action has

accrued. By the original agreement the parties may reduce the

period of limitation to not less than one (1) year but may not

extend it.

(2) A cause of action accrues when the breach occurs, regardless

of the aggrieved party's lack of knowledge of the breach. A breach

of warranty occurs when tender of delivery is made, except that

where a warranty explicitly extends to future performance of the

goods and discovery of the breach must await the time of such

performance the cause of action accrues when the breach is or should

have been discovered.

(3) Where an action commenced within the time limited by

subsection (1) is so terminated as to leave available a remedy by

another action for the same breach such other action may be

commenced after the expiration of the time limited and within one

(1) year after the termination of the first action unless the

termination resulted from voluntary discontinuance or from dismissal

for failure or neglect to prosecute.

(4) This section does not alter the law on tolling of the

statute of limitations nor does it apply to causes of action which

have accrued before this act becomes effective.