Bobcat 753L / Kubota V2203 Glow Plugs

[spottrouble]

I recently acquired a Bobcat 753L skidsteer with a Kubota V2203 engine, the manual says it uses NGK 4693/Y-716RS glow plugs. NGK website says they are "Discontinued", ebay search shows some in UK, Germany and Latvia, nothing stateside. Is there an equivalent NGK part#, or something made by another recognized mfr, or am I stuck getting no-name chinese glow plugs from the Jungle site?