#47 Equivalent Miniature Bayonet-Base Lamp — Fits Pinball Machines & Fender Tube Amps

Aftermarket equivalent #47 miniature lamp — a T-3-1/4 bayonet-base bulb cross-referenced to the industry-standard #47 / T47 lamp, with the same function and fit as the original. The workhorse bulb for pinball machine playfield and backbox lighting, and the standard pilot light for most Fender tube amplifiers.

Key features

• Exact-match replacement for the #47 / T47 miniature lamp spec
• 6.3 volts, 0.15 amps, miniature bayonet base (BA9s) — push in and twist
• 3,000-hour rated life, warm incandescent glow
• One of the two canonical pinball bulbs — used on nearly every machine
• Aftermarket equivalent — same function and fit as the original #47 lamp

Specifications

Compatibility

This #47 lamp fits the following equipment:

• Pinball machines — general illumination (playfield and backbox) on virtually all titles; the #47 is one of the two standard pinball bulbs
• Fender tube amplifiers using a #47 pilot light, including Hot Rod Deluxe, Hot Rod DeVille, '65 Twin Reverb, '65 Deluxe Reverb, '65 Princeton Reverb, Super Reverb, '59 Bassman Reissue, Blues Deluxe Reissue, Blues DeVille Reissue, Custom Vibrolux Reverb, Vibro-King, and Super-Sonic models (not Blues Junior / Pro Junior — those use non-replaceable LED pilot lights)
• Vintage radios, jukeboxes, and other 6.3 V bayonet-base applications

OEM cross-reference

Replaces OEM part numbers: #47, T47.

This is an aftermarket equivalent part — not manufactured by the original equipment manufacturer. It matches the #47 lamp's size, shape, and fit, and is built to perform to the same standard.

What's included

• 1 × #47 miniature lamp

Need more than one? See our #47 10-pack for playfield refreshes and shop spares.

Frequently asked questions

What does the #47 lamp replace?

The industry-standard #47 (also listed as T47) miniature bayonet-base lamp: 6.3 volts, 0.15 amps, T-3-1/4 shape. If your equipment calls for a #47 or T47 bulb, this is the direct equivalent.

Will this fit my pinball machine?

Yes — the #47 is one of the two canonical pinball bulbs, used for general illumination on nearly every machine, in both the playfield and the backbox. It installs with a push-and-twist into any BA9s miniature bayonet socket.

Will this fit my Fender amp?

If your Fender tube amp uses a #47 pilot light, yes — that covers most Hot Rod, Reissue, and vintage-reissue models (Hot Rod Deluxe, Twin Reverb, Deluxe Reverb, Princeton Reverb, Blues Deluxe, and more). It does not fit the Blues Junior or Pro Junior, which use non-replaceable LED pilot lights.

Is this the brass-base or nickel-base bulb?

This has the brass-colored bayonet base shown in the product photo. The base is what locks into the socket — brass and nickel bases are interchangeable in any BA9s socket.

Do you sell these in larger quantities?

Yes — this listing is for a single lamp, and we also offer a 10-pack for playfield refreshes and shop spares. For larger restorations, message us about volume pricing.