Does this have a BA15S base and is the bulb equilivant to an 1156?

Yes this has a BAU15s base. A 1156 bulb has little tabs on the base that are 180° apart, or exactly opposite each other. This bulb which is a 7507, has those tabs 150° apart. If you file down one of the tabs then you can use the bulb in either type of socket. The tabs don't do anything other than help hold it in place and it'll still be snug and work even if one has been sanded down a bit.

Rear stop light SLK 230 1999?

Apologies in advance for answering with a question ?? Have you looked in your owners handbook. Its a Mercedes so should have a very comprehensive one. Answer should be there

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Original Bulbs PY21W 7507-02B 12V 21W (Pair)

Product ID: 320412740

Details

Brand
Osram
Brightness
280 Lumen
Light source type
Filament
Specific uses for product
Lamps
Wattage
21 watts

⚡21W power efficiency

💡280 lumens brightness

🔋12V nominal voltage

R570

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Description

🚗 Light up your drive with Osram’s trusted brilliance!

PERFECT FIT PAIR - Comes as a pair, right-side specific, making replacement hassle-free and precise.
TRUSTED OSRAM QUALITY - Engineered by Osram, a leader in automotive lighting, for durability and OEM compatibility.
HIGHLY RATED BY DRIVERS - 4.6-star average from 194 reviews—join the community that trusts Osram for road safety.
BRILLIANT VISIBILITY BOOST - 280 lumens of crisp, clear light for safer drives and standout signaling.
OPTIMIZED POWER PERFORMANCE - Reliable 12V and 21W design ensures consistent brightness without draining your battery.

The Osram Original Bulbs PY21W 7507-02B are 12V, 21W filament lamps delivering 280 lumens of bright red light, designed specifically for right-side vehicle signaling. Known for reliable quality and OEM fit, these bulbs come in pairs and enjoy high customer satisfaction, making them a smart upgrade for enhanced visibility and safety on the road.

Specifications

ASIN	B00H7D0G8O
Auto Part Position	Right
Brand Name	Osram
Brightness	280 Lumen
Color	Red
Customer Reviews	4.6 4.6 out of 5 stars (194)
Light Output Maximum	280 Lumens
Light Source Type	Filament
Manufacturer	Osram
Manufacturer Part Number	7507-02B
Model Number	7507-02B
OEM Equivalent Part Number	12496NAB2, 1987301018, 7507, 7507-02B, 7507-2BL
Package Quantity	2
Specific Uses For Product	Lamps
Unit Count	1 Count
Voltage	12 Volts
Wattage	21 watts

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R570

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to South Africa.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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