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Standard Motor Products HN-18 Horn Assorted , One Size

4.2 4.2 out of 5 stars 53 ratings
$33.03
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Purchase options and add-ons

Brand Standard Motor Products
Color Assorted
Item dimensions L x W x H 4 x 4 x 4 inches
Fit Type Vehicle Specific Fit
Style Modern

About this item

  • The Package Height Of The Product Is 4.638 Inches
  • The Package Length Of The Product Is 5.813 Inches
  • The Package Width Of The Product Is 6.62 Inches
  • The Package Weight Of The Product Is 0.3 Pounds
› See more product details

Frequently bought together

Standard Motor Products HN-18 Horn Assorted , One Size
$33.03
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Standard Motor Products HN17T OE Replacement Horn
$27.78
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Top Brand: Standard Motor Products

Highly Rated
100K+ customers rate items from this brand highly
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Product Description

Established in 1919 and traded on the NYSE, Standard Motor Products, Inc., (SMP) is a leading independent manufacturer, distributor, and marketer of replacement parts for motor vehicles in the automotive aftermarket industry, with a complementary focus on heavy duty, industrial equipment and original equipment markets.

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Standard Motor Products HN-18 Horn Assorted , One Size

Standard Motor Products HN-18 Horn Assorted , One Size

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What's in the box

  • Horn

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    Price$33.03$35.91$34.63-23% $12.99
    List: $16.95    		$21.97$11.88
    Delivery
    Get it as soon as Thursday, May 16
    Get it May 20 - 21
    Get it as soon as Thursday, May 16
    Get it as soon as Thursday, May 16
    Get it May 17 - 21
    Get it as soon as Thursday, May 16
    Customer Ratings
    4.24.2 out of 5 stars53
    4.04.0 out of 5 stars7
    4.64.6 out of 5 stars20
    4.44.4 out of 5 stars353
    4.64.6 out of 5 stars17
    4.74.7 out of 5 stars19
    Easy to install
    —
    —
    —
    4.5
    4.0
    5.0
    Value for money
    —
    —
    —
    4.3
    4.0
    4.8
    Sold By
    Amazon.com
    Autoplicity ✅
    Amazon.com
    FARBIN
    AutoPartsGiant
    Hahanfair
    compatible vehicles
    —
    —
    —
    Passenger Car, Watercraft, Motorcycle, Van, ATV, Trailer, Bicycle, Truck, SUV
    Passenger Car
    Passenger Car, Motorcycle, ATV, Trailer, Truck, SUV, UTV
    style
    Modern
    Modern
    Classic
    —
    Modern
    Modern
    fit type
    Vehicle Specific Fit
    Universal Fit
    Vehicle Specific Fit
    Universal Fit
    Vehicle Specific Fit
    Universal Fit

    Looking for specific info?

    Customer reviews

    4.2 out of 5 stars
    4.2 out of 5
    53 global ratings

    Customers say

    Customers like the ease of installation of the vehicle horn. They mention it's loud and easy to install. However, some customers disagree on quality.

    AI-generated from the text of customer reviews

    3 customers mention3 positive0 negative

    Customers find the installation process of the vehicle horn to be easy.

    "Easy install, loud like a horn should be!" Read more

    "Shipped fast. Seemed to be made well, and pretty easy to install. Low tone and high tone horns on my son's 2001 Ford f150...." Read more

    "...Wish it was a little louder but installed with no problems." Read more

    5 customers mention3 positive2 negative

    Customers are mixed about the quality of the vehicle horn. Some mention that it sounds great, is easy to install, and loud like a horn should be. However, others say that it's quite dissonant with their factory high tone, has a slight tinny sound, and has no tone adjustment.

    "Easy install, loud like a horn should be!" Read more

    "...'s to say, it's a horn..... I bought both the hi and lo tones and they sound great" Read more

    "...with a tuning adjustment but not this one, and it's quite dissonant with my factory high tone. Would be fine as a single tone replacement." Read more

    "...This replaced the low tone horn. Loud as original, but tone seemed to be a little higher and has slight tinny sound which is reason I deducted one..." Read more

    Top reviews from the United States

    Robert
    5.0 out of 5 stars Good horn
    Reviewed in the United States on August 22, 2018
    Verified Purchase
    Easy install, loud like a horn should be!
    One person found this helpful
    Helpful
     Report
    VA Renaissance Man
    4.0 out of 5 stars OK but no tone adjustment
    Reviewed in the United States on July 27, 2023
    Verified Purchase
    Works fine but not very low for a low tone horn. Maybe fine with the companion high tone. Horns like this used to come with a tuning adjustment but not this one, and it's quite dissonant with my factory high tone. Would be fine as a single tone replacement.
    Helpful
     Report
    JAMES O'NEILL
    5.0 out of 5 stars Honk, Honk
    Reviewed in the United States on October 26, 2016
    Verified Purchase
    What's to say, it's a horn..... I bought both the hi and lo tones and they sound great
    One person found this helpful
    Helpful
     Report
    Robin
    5.0 out of 5 stars Very Good Replacement
    Reviewed in the United States on September 30, 2011
    Verified Purchase
    It's a horn. It has nearly the same sound as the original, mounts correctly, and the electrical connections are correct. In the end, this is what a replacement should do and is 1/3 the money of the dealer part. No way to know the durability but would have to burn through 3 to break even so looks like a deal.
    3 people found this helpful
    Helpful
     Report
    mofire
    4.0 out of 5 stars Good horn, slightly different tone from original.
    Reviewed in the United States on February 17, 2017
    Verified Purchase
    Shipped fast. Seemed to be made well, and pretty easy to install. Low tone and high tone horns on my son's 2001 Ford f150. This replaced the low tone horn. Loud as original, but tone seemed to be a little higher and has slight tinny sound which is reason I deducted one star.
    One person found this helpful
    Helpful
     Report
    Todd T.
    1.0 out of 5 stars NOT OEM 3-Wire replacement horn for 1999 Saturn SL1
    Reviewed in the United States on December 23, 2011
    Verified Purchase
    This horn can only be installed as a 2-wire horn. If installed as a 2-wire horn the chirp for the locking car and the signal to the horn from the security alarm will no longer work. To continue to use this horn (in my case pass state inspection) as a 2-wire horn will require that a least a 1N4001 1A 100V diode (or a 1N5401 3A 100V both found at RadioShack) be soldered across the horn connectors to protect the contacts inside the horn and the horn button on the steering wheel. Yes, you will need to cut off the existing connector to make the short pigtail coming off of the head light even shorter so you may want to find a similar connector (I could not find a spare one on the wire harness) or proceed to the preferred solution offered as a challenge below.

    If you want a challenge, the plastic connector housing on the original 3-wire horn contains a circuit (sealed in the green material) that still should function. This circuit can be removed without damage by using a 1/4" drill to drill about 1/8" down to disconnect the 3 plastic rivets that hold the circuit board to the horn. With the circuit assembly removed from the horn your attachment options are endless. I suggest that you attach short wires from the circuit board assembly to the replacement horn, since you may need to replace that horn in the future.

    With the connector disconnected from the old horn, test the leads with a meter or small test light to see if it responds to the horn button being pressed and the remote lock. Now test the horn to see if it will work. If it does, the problem will more than likely continue to be intermitten due to oxide build up over time on the contacts inside the horn. Replace the horn with a cheaper model than this one (I found several before I mistakenly bought this one), since there is no point to pay up for an aftermarket OEM horn that does not exist.

    Just an FYI, the horn is actually powered by a NPN BUZ11 transistor. This is contrary to most who incorrectly think that a relay is required to switch power to the horn. In fact, the horn has similar functioning as a relay except when the coil is actuated it resonates a small metal dowel that is connected to a thin metal disk to make the horn sound. Have fun.

    On Wednesday, November 16, 2011, Dantuono, Joey <jdantuono@smpcorp.com> wrote:
    > Hi Todd,
    >
    > HN18 is indeed a conventional horn, that requires an external relay. At this time we do not have a unit with an internal relay. Sorry for any confusion.
    >
    >
    >
    > Joe Dantuono
    >
    > Quality Assurance
    3 people found this helpful
    Helpful
     Report
    Barry K. Powell
    4.0 out of 5 stars Good replacement horn for 2005 Dodge Neon.
    Reviewed in the United States on June 1, 2017
    Verified Purchase
    It was hard to find a replacement for my daughters horn on her 2005 Dodge Neon. Wish it was a little louder but installed with no problems.
    Helpful
     Report