Block Heater Cord
FailDemand is soft, at -90.5% this quarter, so Block Heater Cord is a Fail.
- Flapen Score
- 28 / 100Ranks 7,121 of 7,287 Automotive niches · −21 vs the category median of 4928
- Market size
- $8K/yr34K searches / yr
- 90-day growth
- -90.5%search demand this quarter
- Competition
- 83%top-5 click share · 7 brands · 19 sellers
Flapen Score
Block Heater Cord against its category
The dotted line is the Automotive average. Past it, Block Heater Cord is stronger. Inside it, weaker.
Market
The Block Heater Cord market on Amazon at a glance
Shoppers on Amazon United States searched for Block Heater Cord 34K times last year and spent an estimated $8K. The top 5 brands take 89% of clicks. Flapen scores it 28 out of 100, a Fail.
01 · Demand
An estimated 1.1% of those searches ended in a purchase.
Shoppers searched for this 34K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.1% of those searches ended in a purchase. Searches in the last 90 days moved -90.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $8K a year.
- Searches, last 12 months
- 34K
- Growth, 90 days vs prior 90
- -90.5%
- Conversion, latest week
- 1.1%
- Market size, estimated
- $8Ka year
- Top search term
- block heater cord18K searches a year
02 · Price
A sale here is worth $21.82.
Listings sell for $21.82 on average, from $14.66 to $39.19. Amazon reports units sold in ranges. This niche sold 1K to 2K a year. The average listing sells 0 to 100 of them. At $21.82 that is $0 to $2K a year per listing.
- Average price
- $21.82inside the $15 to $100 sweet spot
- Price range
- $14.66–$39.19
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 1K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$2K
- Returns
- 2.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
67% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 2.8% of listings are out of stock. The average listing ranks #38 within Engines & Engine Parts. It carries 254 reviews at 4.69 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 67%
- Prime listings
- 100%
- Out of stock, average day
- 2.8%
- Average rank
- #38in Engines & Engine Parts
- Average rating
- 4.69 starsAmazon United States average 4.42 stars
- Average reviews
- 254per listing
- Listings tracked
- 9
04 · Newcomers
0 of last year's 2 launches cleared the first-year sales bar.
2 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 28 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 2
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 28 months
Products
Top Block Heater Cord products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 9, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
VANORM Replacement Cordset Cord for Heavy Duty Immersion Heaters and Engine Block Heaters 6-feet 120 Volts Compatible with Dodge Ram Cummins Diesel and Ford F250 350 - Block Heater Cord
- Price
- $19.80
- Rating
- 4.7/5
- Reviews
- 284
- Age
- 3y ago

X4XZ 120V Engine Block Heater Cord 251919 with Cap for Ford Powerstroke Diesel E350 450 550 F250 F350 F450 F550 Dodge Ram 2500 3500 Cummins Diesel 5.9 6.7L Heavy Duty Immersion Heaters 6 Feet
- Price
- $16.95
- Rating
- 4.8/5
- Reviews
- 27
- Age
- 2y ago

Zerostart 3600008 Replacement Cordset for Heavy Duty Immersion Heaters and Engine Block Heaters 6-feet | 120 Volts
- Price
- $32.67
- Rating
- 4.8/5
- Reviews
- 1,212
- Age
- 15y ago

Zerostart 3600006 Auto and Light Truck Replacement Cordset for Freeze Plug Engine Block Oil Pan and Transmission Heaters 5-feet | 120 Volts
- Price
- $21.59
- Rating
- 4.4/5
- Reviews
- 320
- Age
- 15y ago

6Ft 16AWG Engine Block Heater Cord 84303149 19301659 Compatible with 2001-2018 6.6 L Duramax Diesel Engine Chevy GMC 2500 3500
- Price
- $17.80
- Rating
- 4.8/5
- Reviews
- 19
- Age
- 10mo ago
Trending
estimated 90-day click momentum
X4XZ 120V Engine Block Heater Cord 251919 with Cap for Ford Powerstroke Diesel E350 450 550 F250 F350 F450 F550 Dodge Ram 2500 3500 Cummins Diesel 5.9 6.7L Heavy Duty Immersion Heaters 6 Feet
- Price
- $16.95
- Rating
- 4.8/5
- Reviews
- 27
- Age
- 2y ago

120V Block Heater Cord 251919 for Dodge Ram 2500 3500 Cummins 1989-Current 5.9 L /2007-Current 6.7 L for 95-16 Ford 6.0 6.4 7.3 Powerstroke Engine Block Heaters 68409910AB 3600008
- Price
- $15.53
- Rating
- 4.9/5
- Reviews
- 57
- Age
- 2y ago

IXMGA 84564686 90 Inches Engine Coolant Heater Cord
- Price
- $39.19
- Rating
- 4.6/5
- Reviews
- 21
- Age
- 10mo ago

Zerostart 3600006 Auto and Light Truck Replacement Cordset for Freeze Plug Engine Block Oil Pan and Transmission Heaters 5-feet | 120 Volts
- Price
- $21.59
- Rating
- 4.4/5
- Reviews
- 320
- Age
- 15y ago

DVPARTS 120V Heater Cord 251919 for Ford 7.3 6.0 6.4 6.7L F350 250 F250
- Price
- $14.66
- Rating
- 4.6/5
- Reviews
- 245
- Age
- 4y ago
Newest
by launch date
6Ft 16AWG Engine Block Heater Cord 84303149 19301659 Compatible with 2001-2018 6.6 L Duramax Diesel Engine Chevy GMC 2500 3500
- Price
- $17.80
- Rating
- 4.8/5
- Reviews
- 19
- Age
- 10mo ago

IXMGA 84564686 90 Inches Engine Coolant Heater Cord
- Price
- $39.19
- Rating
- 4.6/5
- Reviews
- 21
- Age
- 10mo ago

X4XZ 120V Engine Block Heater Cord 251919 with Cap for Ford Powerstroke Diesel E350 450 550 F250 F350 F450 F550 Dodge Ram 2500 3500 Cummins Diesel 5.9 6.7L Heavy Duty Immersion Heaters 6 Feet
- Price
- $16.95
- Rating
- 4.8/5
- Reviews
- 27
- Age
- 2y ago

120V Block Heater Cord 251919 for Dodge Ram 2500 3500 Cummins 1989-Current 5.9 L /2007-Current 6.7 L for 95-16 Ford 6.0 6.4 7.3 Powerstroke Engine Block Heaters 68409910AB 3600008
- Price
- $15.53
- Rating
- 4.9/5
- Reviews
- 57
- Age
- 2y ago

120V Block Heater Cord for Heavy Duty Immersion Heaters and Engine Block Heaters 6-feet 16AWG Compatible with Ford F250 F350 and Dodge Ram 2500 Cummins Diesel
- Price
- $18.18
- Rating
- 4.6/5
- Reviews
- 98
- Age
- 2y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 83% of clicks. A locked shelf that new listings rarely crack.
Brands
7 rising
Sellers
19
Est. top-5 brand share
89%
Top 20: 100%
Est. top-5 click share
83%
Top 20: 100%
Open market
5%
- Zerostart25%
- VANORM24%
- X4XZ21%
- Tecreddy13%
- LDCRE7%
- DVPARTS6%
- Open — no brand owns it (1 brand, 5%)
Demand
Block Heater Cord search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Jan, Feb, Dec · busiest ÷ quietest = 26.9× · 7 of 12 months tracked
Search terms
Top Block Heater Cord search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- block heater cord18K/yr
- engine block heater cord12K/yr
- cummins block heater cord4K/yr
Reviews and returns
What reviews say buyers love and hate about Block Heater Cord
We read the reviews and the return reasons for every product selling here.
“Cord is much longer than what I needed using the way I am”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
15 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Block Heater Cord questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









