Lanuovx 3157A Amber Bulbs 20-Pack — P27/7W Replacement for Turn Signal, Brake & Tail Lights

Lanuovx 20-pack 3157A amber bulbs are P27/7W replacement lamps designed for turn signals, brake lights, and tail/marker applications, offering reliable amber visibility in a bulk set.

These 3157A (also listed as 3157NA, 3047A, 3057A, 4057A, 4157NA compatible) miniature bulbs come in a 20-count package so you have spares on hand for routine maintenance or quick swaps. Built with a warm amber color and engineered for long life, they’re intended to restore or maintain your vehicle’s signaling and rear light functions without changing wiring or sockets. Below you’ll find practical answers to common buyer questions to help you confirm fit and performance.

How bright are these bulbs and what color do they show?

The Lanuovx 3157 amber bulbs produce a clear amber output rated around 475 lumens with a warm color temperature near 2800K, which is optimized for visibility rather than harsh white light. Their amber tone improves signal recognition in many driving conditions while avoiding overly cool or bluish hues.

• Nominal output: ~475 LM for visible signaling
• Color temperature: about 2800K (warm amber)
• Designed for signal clarity, not interior illumination

Will these fit my vehicle: socket and application compatibility?

The bulbs are P27/7W form-factor 3157-series replacements and will fit sockets designed for 3157A/3157NA and several cross-reference numbers (3047A, 3057A, 4057A, 4157NA). They are multi-functional and commonly used as turn signals, brake lights, tail lights, and side marker bulbs in compatible housings.

• Socket type: P27/7W (3157-series)
• Cross-references: 3157A, 3157NA, 3047A, 3057A, 4057A, 4157NA
• Applications: brake, tail, turn signal, side marker (verify vehicle fit before purchase)

How long do these bulbs last and what about build quality?

Lanuovx manufactures these bulbs with durable materials and a precision assembly process intended to extend service life compared with inexpensive single-use bulbs. While lifetime depends on operating conditions and vehicle electrical systems, the product is described as having an ultra-long life for routine on-road use.

• Construction: high-quality materials and precision manufacturing
• Expected outcome: extended service life versus basic replacements
• Best practice: install in properly functioning sockets and check vehicle electronics

How many bulbs come in one purchase and can I use extras as spares?

Each purchase includes 20 Lanuovx 3157 amber bulbs, providing enough units for multiple replacements or to keep spares in your glovebox or tool kit. The larger pack is useful for fleet maintenance, DIY enthusiasts, or anyone who prefers to replace bulbs in pairs for consistent appearance and performance.

• Pack count: 20 bulbs per order
• Suitable for: individual owners, fleets, or spare stocking
• Recommendation: keep extras for quick on-road replacements

Who is this for: The Lanuovx 20-pack 3157A amber bulbs are ideal for drivers and mechanics needing reliable, OEM-style amber signaling replacements in bulk. If your vehicle uses 3157-series sockets and you want consistent amber color, spare bulbs for maintenance, or a cost-effective supply for multiple cars, this set delivers practical value. Always verify socket compatibility with your vehicle make and model before installation, and consult a technician if your vehicle uses CAN-bus or warning systems that may require resistors or LED-specific components.