---
title: "oil cap — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/oil-cap"
last_updated: "2026-07-13T20:02:50.720Z"
locale: en
meta:
  description: "oil cap shows a fragmented shelf (top 5 take 22% of clicks), but soft demand (-15.6% this quarter) keeps it on the watch list."
  "og:description": "oil cap shows a fragmented shelf (top 5 take 22% of clicks), but soft demand (-15.6% this quarter) keeps it on the watch list."
  "og:title": "oil cap — Niche Verdict: Worth a look (54/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **oil cap**

**Worth a look**

Shows a fragmented shelf (top 5 take 22% of clicks), but soft demand (-15.6% this quarter) keeps it on the watch list.

Market size 24Growth 17Conversion 52Competition 93Returns 45Price range 37Avg price 36Brand share 79Review moat 91Quality gap 76

**Competition**

**Great****22%**

top-5 click share — an open shelf

**Review moat**

**Great****186.53**

avg incumbent reviews — the moat a new listing must climb

**Brand share**

**Great****56%**

top-5 brand share — no brand owns this niche

**Quality gap**

**Great****4.3★**

avg incumbent rating — lower means beatable quality

**Conversion**

**Good****4.3%**

search→purchase rate — share of searches ending in a sale

**Returns**

**Okay****3.6%**

return rate — above 6% kills the launch gate

**Price range**

**Okay****$5.50–$20.70**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Avg price**

**Okay****$10.35**

avg listing price — sweet spot $15–$100

**Market size**

**Bad****$97K**

$97K/yr · 218K searches

**Growth**

**Bad****-15.6%**

90-day search growth — must beat 0% to launch

## **Competition**

Clicks spread well past the top 5 (22% combined) — an open shelf where new products get seen.

**Brands**

**37 **▼falling

**Sellers**

**132**

**Top-5 brand share**

**56%**

**Open market**

**39%**

- Manymiba24% - ACDelco12% - KUQUTIDY9% - MotoRad7% - A-Premium5% - Anleecap5%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%2%$2K4%$4K6%$6K8%$8K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)2 products missing review or click data not plotted

All 96 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![KUQUTIDY Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce FC208 12573337](https://m.media-amazon.com/images/I/41PDq5pvytL.jpg)**KUQUTIDY Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce FC208 12573337**KUQUTIDY**$9.02**3.6★67 rev](https://www.amazon.com/dp/B0FVRQNWQC) [2![Engine Oil Filler Cap for Dodge Ram Jeep Chrysler 1997-2003 Ram 1500 2500 3500 Wrangler Cherokee Caravan Dakota Durango Intrepid Neon Stratus Concorde PT Cruiser 53010654AA 04648831AA](https://m.media-amazon.com/images/I/41SlRxsjR2L.jpg)**Engine Oil Filler Cap for Dodge Ram Jeep Chrysler 1997-2003 Ram 1500 2500 3500 Wrangler Cherokee Caravan Dakota Durango Intrepid Neon Stratus Concorde PT Cruiser 53010654AA 04648831AA**Manymiba**$7.45**4.6★70 rev](https://www.amazon.com/dp/B0F8TTQ6H2) [3![KoiLuvGo Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337](https://m.media-amazon.com/images/I/41Hi3QXaA0L.jpg)**KoiLuvGo Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337**KoiLuvGo**$9.07**2.5★15 rev](https://www.amazon.com/dp/B0GHPPXPZW) [4![ACDelco GM Original Equipment FC219 (12589430) Engine Oil Filler Cap](https://m.media-amazon.com/images/I/31cGoOAbkfL.jpg)**ACDelco GM Original Equipment FC219 (12589430) Engine Oil Filler Cap**ACDelco**$14.89**4.7★1,414 rev](https://www.amazon.com/dp/B000C9S2J0) [5![ACDelco GM Original Equipment FC208 (12573337) Engine Oil Filler Cap](https://m.media-amazon.com/images/I/41SO5xfDxsL.jpg)**ACDelco GM Original Equipment FC208 (12573337) Engine Oil Filler Cap**ACDelco**$10.77**4.7★1,496 rev](https://www.amazon.com/dp/B000C9TTJM)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![AurLunUs Engine Oil Filler Cap Replacement automotive oil cap Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337](https://m.media-amazon.com/images/I/417ZTwaSvOL.jpg)**AurLunUs Engine Oil Filler Cap Replacement automotive oil cap Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337**AurLunUs**$8.99**0 rev1mo ago](https://www.amazon.com/dp/B0GX7LT8KJ) [![CCNU FC208 Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce #FC208 12573337 Oil Tank Cap](https://m.media-amazon.com/images/I/31G+-arTb9L.jpg)**CCNU FC208 Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce #FC208 12573337 Oil Tank Cap**CCNU**$10.04**1 rev2mo ago](https://www.amazon.com/dp/B0GYS28GRG) [![Engine Oil Cap Replacement Durable Oil Filler Cap Part Eligible for Replace FC208 12573337 Engine Oils Caps Compatible with Chevrolet/GMC/Cadillac/Buick/Oldsmobile/Pontiac](https://m.media-amazon.com/images/I/41Wd1LghbkL.jpg)**Engine Oil Cap Replacement Durable Oil Filler Cap Part Eligible for Replace FC208 12573337 Engine Oils Caps Compatible with Chevrolet/GMC/Cadillac/Buick/Oldsmobile/Pontiac**TSIEBRV**$7.83**3 rev3mo ago](https://www.amazon.com/dp/B0GV79RD16) [![CCNU Engine Oil Filler Cap Replacement Compatible with Jeep Wrangler Cherokee Grand Cherokee Dodge Ram 1500 2500 3500 Dakota Durango Caravan Neon Chrysler Concorde PT Cruiser 53010654AA 04648831AA](https://m.media-amazon.com/images/I/41mpxMP-C3L.jpg)**CCNU Engine Oil Filler Cap Replacement Compatible with Jeep Wrangler Cherokee Grand Cherokee Dodge Ram 1500 2500 3500 Dakota Durango Caravan Neon Chrysler Concorde PT Cruiser 53010654AA 04648831AA**CCNU**$8.11**3 rev3mo ago](https://www.amazon.com/dp/B0GTM3M1GM) [![Lxsloet Engine Oil Filler Cap Oil Cap Replacement Brake Fluid Cap Compatible with Wrangler Grand Cherokee Dakota for Chrysler Dodge Ram 1500 2500 3500 Replaces OEM# 53010654AA 04648831AA](https://m.media-amazon.com/images/I/41EDysjnIwL.jpg)**Lxsloet Engine Oil Filler Cap Oil Cap Replacement Brake Fluid Cap Compatible with Wrangler Grand Cherokee Dakota for Chrysler Dodge Ram 1500 2500 3500 Replaces OEM# 53010654AA 04648831AA**Lxsloet**$9.45**3 rev4mo ago](https://www.amazon.com/dp/B0GQ8WD7Z3)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![CCNU FC208 Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce #FC208 12573337 Oil Tank Cap](https://m.media-amazon.com/images/I/31G+-arTb9L.jpg)**CCNU FC208 Engine Oil Filler Cap Replacement Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Repalce #FC208 12573337 Oil Tank Cap**CCNU**$10.04**1.0★**▲ 288%**](https://www.amazon.com/dp/B0GYS28GRG) [![AurLunUs Engine Oil Filler Cap Replacement automotive oil cap Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337](https://m.media-amazon.com/images/I/417ZTwaSvOL.jpg)**AurLunUs Engine Oil Filler Cap Replacement automotive oil cap Compatible with GM 1992-2018 1994-2011 Chevrolet GMC Cadillac Buick Oldsmobile Pontiac Hummer Saab Isuzu Replaces OEM #FC208 12573337**AurLunUs**$8.99**0.0★**▲ 288%**](https://www.amazon.com/dp/B0GX7LT8KJ) [![CCNU Engine Oil Filler Cap Replacement Compatible with Jeep Wrangler Cherokee Grand Cherokee Dodge Ram 1500 2500 3500 Dakota Durango Caravan Neon Chrysler Concorde PT Cruiser 53010654AA 04648831AA](https://m.media-amazon.com/images/I/41mpxMP-C3L.jpg)**CCNU Engine Oil Filler Cap Replacement Compatible with Jeep Wrangler Cherokee Grand Cherokee Dodge Ram 1500 2500 3500 Dakota Durango Caravan Neon Chrysler Concorde PT Cruiser 53010654AA 04648831AA**CCNU**$8.11**3.3★**▲ 282%**](https://www.amazon.com/dp/B0GTM3M1GM) [![Engine Oil Cap Replacement Durable Oil Filler Cap Part Eligible for Replace FC208 12573337 Engine Oils Caps Compatible with Chevrolet/GMC/Cadillac/Buick/Oldsmobile/Pontiac](https://m.media-amazon.com/images/I/41Wd1LghbkL.jpg)**Engine Oil Cap Replacement Durable Oil Filler Cap Part Eligible for Replace FC208 12573337 Engine Oils Caps Compatible with Chevrolet/GMC/Cadillac/Buick/Oldsmobile/Pontiac**TSIEBRV**$7.83**4.6★**▲ 277%**](https://www.amazon.com/dp/B0GV79RD16) [![ESWW Engine Oil Filler Cap Replacement Durable Oil Fill Cap for Secure Sealing Leak-Proof Tight Fit Design with Identification Pattern Replaces OEM 06K103485A Compatible with VW Audi](https://m.media-amazon.com/images/I/415mJdlCDEL.jpg)**ESWW Engine Oil Filler Cap Replacement Durable Oil Fill Cap for Secure Sealing Leak-Proof Tight Fit Design with Identification Pattern Replaces OEM 06K103485A Compatible with VW Audi**ESWW**$7.16**1.0★**▲ 221%**](https://www.amazon.com/dp/B0GG2YS7SD)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -15.6% search growth over the last 90 days.

5K3K seasonSepDecMarJunAugNovMarMay

No pronounced peak months · busiest ÷ quietest = 1.3×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Size-Overall**59%

*“Fit my jeep”*

**Quality-Overall**10%

*“Good quality”*

**Advertised Vs Actual Product**7%

*“Works as advertised”*

**Value For Money**6%

*“Good Value”*

**Efficiency**3%

*“Works well”*

**Lubrication**3%

*“The oil cap was decent”*

**Leak-Proof**1%

*“Fixed my oil leak on 09 ford escape 3.0 v6”*

**Design-Overall**1%

*“Works as designed”*

**Assembly/Installation**1%

*“Installation was super easy”*

**Functionality-Overall**1%

*“Item works as described”*

### **What buyers complain about **

**Size-Overall**35%

*“it doesnt fit my Car”*

**Compatibility-Overall**20%

*“Not compatible”*

**Durability**8%

*“fell off after a few of days of driving”*

**Quality-Overall**7%

*“The quality is the part that I am questioning as the part appears to be a little bit smaller on the top part”*

**Advertised Vs Actual Product**5%

*“Inaccurate information”*

**Leak-Proof**3%

*“it had started leaking a mess I didnt think I could find an alternative”*

**Defective Material/Parts**2%

*“Defective part”*

**Jamming/Clogging**1%

*“There is a manufacturers defect in the motor causing the PCV valve to clog”*

**Fastener Quality**1%

*“The cap actually screws in so it doesnt pop off like a cheap plug”*

**Weight Heavy**1%

*“A mere paperweight”*

### **Top return reasons **

**Size-Overall**70%

**Compatibility-Overall**14%

**Advertised Vs Actual Product**6%

**Defective Material/Parts**4%

**Value For Money**2%

**Functionality-Overall**1%

**Assembly/Installation**1%

**Leak-Proof**0%

**Product Condition**0%

**Mechanism Issues**0%