Garage
Shop

See all parts that fit your 2011 LX570

Metra 40-HD21 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 2009-2022 vehicles from Honda, Acura

Metra
Shop all Metra
Only 1 Left!
highlight-star-icon

• Honda factory radio to aftermarket antenna for select 2009-up Honda and Acura vehicles

See compatible vehicles Learn more about the met-40hd21
No Fit Icon

Doesn't fit your 2011 LX570

Similar items | Update vehicle | Vehicle store
List price $18.99
Thanks , You Pay:
-11%

$16.99

 with warranty
4 payments of $5

Heads up

Your vehicle can use this product in multiple locations. Only a quantity of one can be selected from the product page. You will have the option to adjust the quantity within your cart.

shipping truck icon Free shipping in USA. Provide zip for delivery date.
Quantity
In Stock. Only 1 Left!
Brand new

Acima Logo

No Credit Option

Flexible Lease Payments

Early Purchase Options

Quick Approval Decision

Extend logo

Keep your product protected longer! Extend the warranty after the manufacturer warranty expires. 

  • Hassle-free immediate replacement within minutes!
  • Easy online claims 24/7
  • Covers product breakdowns and failures
Swoosh Icon Icon of Swoosh

For over 25 years, we've been your X-Factor – the team dedicated to having the biggest impact on your shopping experience!

Award winning icon
Award-Winning Service
Shipping icon
FREE Shipping Orders $49+
60 days return policy icon
60-Day Easy Returns
lowest price guarantee icon
Guaranteed Lowest Price
inHouseExpert
In-House Experts
NVX - Worth the Envy - Direct to Consumer Car Audio

Loading...
Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

Description


Metra brand icon

Authorized dealer

General Features:

  • Antenna Adapter Kit
  • For select 2009-Up Honda Acura vehicles
  • Honda factory radio to aftermarket antenna
  • Authorized Internet Dealer
  • 1-year Manufacturer's Warranty

Compatible Vehicles


Please use our Fitment Guide to determine specific compatibility for the submodel and audio features

The vehicle you have selected 2011 Lexus LX570 is not compatible. Change vehicle or See list of compatible similar products


Loading...
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

124
-33.36%

$79.96

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Club 322F main

JBL Club 322F (SPKCB322FAM)

150W Peak (50W RMS) 3.5" Club Series 2 Way Coaxial 3-ohm Speakers

1
-27.29%

$79.95

List price $109.95

XED62 main

Cerwin-Vega XED62

600W Peak (70W RMS) 6.5" XED Series 2-Way Coaxial 4-ohm Speakers

15
-16.67%

$49.99

List price $59.99

PNW-65CS2 main

AudioControl PNW-65CS2

250W Peak (200W RMS) 6.5″ PNW Series 2 Way Component 3-ohm Speakers

4
-5.90%

$319.00

List price $339.00

REF6532IXAM main

Infinity Reference REF6532IXAM

360W Peak (120W RMS) 6.5" Reference Series 2 Way Coaxial 3-ohm Speakers

3
-20.01%

$119.95

List price $149.95

NSP65 main

NVX NSP65

540W Peak (180W RMS) 6.5" N-Series 2 Way Coaxial Car Speakers

93
-35.19%

$69.99

List price $107.99

MPK 163.3 main

Hertz MPK163.3

600W Peak (300W RMS) 6.5" Mille PRO Series 3-way 4-ohm Component Speaker System

2
-14.89%

$999.99

List price $1175.00


Best selling similar products

40-LX11 small

Metra 40-LX11

• Antenna adapter for select 2006-2025 vehicles from Toyota, Subaru, Lexus
• Use for replacing vehicle radio
• Male Motorola connector on one end
• Female Molex connector on other end

(35)

$14.99

List price $17.99

40-LX31 small

Metra 40-LX31 Antenna Adapter

• Antenna adapter for select 2008-2017 vehicles from Lexus, Subaru
• Adapts vehicle's factory stereo and antenna to use with FM modulator
• Easy installation, no major modification required

$28.99

List price $43.99

40-LX21 small

Metra 40-LX21 Antenna Adapter

• Antenna adapter kit for select 2010 Lexus Vehicles

$14.99

List price $18.99

40-HD23 small

Metra 40-HD23

• Honda 2016-Up Reverse Antenna Adapter
• Adapter for installing aftermarket antenna
• select 2016-2025 vehicles from Honda Vehicles

$17.99

List price $18.99

40-GM10 small

Metra 40-GM10

• Antenna adapter for select 1958-2023 vehicles from GMC, Chevrolet, Pontiac
• Use for replacing vehicle radio
• Male Motorola connector on one end
• Female connector on other end

(45)

$8.99

List price $7.99

CR-6 small

American International CR-6

• Antenna Adapter for select 2002-2020 vehicles from Ford, Chevrolet, GMC
• Replace factory radio with aftermarket radio
• Mini Chrysler female one end and Motorola male other end
• Easy plug and play installation

(39)

$3.99

List price $14.99

40-EU55 small

Metra 40-EU55

• Antenna adapter
• For select 2000-2026 vehicles from Audi, Chevrolet, Ram
• Use for replacing vehicle radio
• Male Motorola connector and power wire on one end
• Male European-style FAKRA on the other end

(49)

$19.99

List price $22.99

40-CR10 small

Metra 40-CR10 Antenna Adapter

• Antenna to Radio Adapter Cable
• Compatible with select 2002-2025 vehicles from Ford, Chevrolet, GMC Vehicles with snap-lock factory antenna
• Adapter to aftermarket radio

(57)

$7.49

List price $8.99

40-EU10 small

Metra 40-EU10 Antenna Adapter

• Retains factory antenna for select 2000-2017 vehicles from BMW, Mercedes-Benz, Ford
• Male Motorola on one end
• Male European-style FAKRA connector on the other end
• Easy installation
• No cutting or splicing required

(44)

$11.99

List price $13.99

40-NI12 small

Metra 40-NI12

• Antenna adapter
• For select 2005-2025 vehicles from Nissan, Infiniti, Acura
• Use for replacing vehicle radio
• Male Motorola connector and blue wire lead on one end
• Nissan-style antenna connector on the other end

(31)

$9.99

List price $13.99

Item Details


Manufacturer:

Model Number:

40-HD21

Weight:

0.04lbs

Internal SKU:

met-40hd21

Internal Product ID:

126731

Customer Ratings & Reviews


Metra 40-HD21 Antenna Adapter thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
This item does not have any detailed reviews, but has 1 rating from customers

THUNDER52, XBAF525, SDSK2, SDRLR1, BTK106 small

MTX THUNDER52 with Installation Accessories

90W RMS 5.25" 2-Way Coaxial Speakers with Speaker Baffles, Sound Damping, Roller, and Panel Removal Kit

(151)

$136.06

List price $192.66

AX-GMLAN09EXT small

Axxess AX-GMLAN09EXT

Extension harness for GMOS-LAN-09, LC-GMRC-LAN-09

$39.99

List price $59.98

M2D2-12I small

Rockford Fosgate M2D2-12I

1600W Peak (400W RMS) 12" M2 Series Dual 2-ohm Marine Subwoofer in White with Color Optix

$599.99

List price $599.99

52CVT102_2 small

Kicker CVT10 (52CVT102) - Pair

750W Peak (375W RMS) 10" CompVT Series Single 2-ohm Shallow Car Subwoofer

$359.98

List price $399.98

Stadium 22S, 50EGIFT small

JBL Stadium 22S + FREE $50 Gift Card

300W Peak (100W RMS) 2.5" Stadium Series 3-way Midrange Component Speakers

(14)

$219.00

List price $299.95

40-NI21 small

Metra 40-NI21 Antenna Adapter

Connect your factory antenna to a new aftermarket radio for select 1998-2014 vehicles from Subaru, Nissan

(1)

$12.99

List price $14.99

R1675X2 2 Pack small

Two Pairs of Rockford Fosgate R1675X2

Four 6-3/4" 2-Way PRIME Series Coaxial Car Speakers

(56)

$149.98

List price $159.98

VZ401_CCA-748-600 small

Clarion VZ401 + CCA-748-600

In-Dash DVD/CD/MP3 Car Player w/ 7" Touchsceen Monitor & Bluetooth + Included Audio/Video USB Cable

$242.99

List price $459.98

PROX6M_SDBSK2 small

DS18 PRO-X6M (Sold Individually) with Sound Damping

450W Peak (225W RMS) 6.5” PRO-X Series 8-ohm Mid-Range Loudspeaker + NVX SDBSK2 Premium Sound Damping

(48)

$56.44

List price $64.69

Related Searches


Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

1985 GMC Safari

1985 Chevrolet Cavalier

2011 Lexus LX570

2001 Suzuki Esteem

2025 Ram 1500

2004 GMC Sierra 1500

1991 BMW 535i

2024 Ford Expedition

2022 Ford Mustang

2000 Dodge Stratus

Vehicle
Store
Delete

2017 Harley Davidson FLTRX Road Glide

1994 Harley Davidson FLHTC Electra Glide Classic

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.