We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small clear glass automotive bulb with amber coating and metal BAU15s base

OSRAM

OSRAM 7507 PY21W 12V BAU15s standard bulb

SKU CH-KSB4-DWBT6

12V BAU15s signal bulb delivering 280 lumens at 21 watts with a 500-hour rated life

  • Power rating21
  • Light output280
  • Lifespan (hours)500
  • Product typeAutomotive Bulbs
  • Reliable OEM quality from OSRAM original signal lamps
  • Amber indicator light with 280 lumens for clear signalling
  • 21 W power draw suits 12 V vehicle systems
  • BAU15s base fits standard automotive sockets directly
  • 500-hour rated life for extended replacement intervals

Automotive signal bulb 7507 PY21W

The OSRAM 7507 PY21W is a 12 V automotive signal bulb designed as an original spare part for indicator and parking-light functions. It suits drivers who need a direct factory-specification replacement for a failed lamp. Buyers who want higher-output or LED retrofit units will not find those features here.

BAU15s base with metal construction

The bulb uses a BAU15s base with a metal housing that matches OEM mounting dimensions for a secure twist-lock fit. This construction resists vibration and corrosion in daily driving, ensuring the lamp stays seated through temperature cycles and road shock.

21 W draw with 280 lumen output

Rated at 21 W, the lamp produces 280 lumens of amber light for clear signalling. The rated service life is 500 hours under normal vehicle electrical conditions, with power draw and thermal output consistent with standard 12 V signal circuits.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameOSRAM
Product typeAutomotive Bulbs
Display
Light output280
Power
Power rating21
More details
Lifespan (hours)500

Questions about this item

What voltage and base type does the 7507 PY21W bulb use?

It operates at 12 volts and fits a BAU15s socket with a metal base.

What are the physical dimensions and wattage for the 7507 PY21W?

The bulb draws 21 watts and uses a standard BAU15s base; overall length and diameter match the PY21W form factor.

How is the 7507 PY21W installed and what common mistake should be avoided?

Align the offset pins with the BAU15s socket and twist to lock; do not force it or touch the glass with bare fingers.

More in General-Purpose & Specialty Bulbs

Similar items