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ACDelco 36299 Professional Idler Pulley with Bolt, 17 mm Insert, Dust Shield, Retainer, and Spacer
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From ACDelco
This report was last updated 6/11/2021.
Refresh the report to view the most up-to-date data available:
Refresh the report to view the most up-to-date data available:
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Report Info:
Note: While Amazon.com claims 579 Ratings, we counted 150 Reviews available on their site.
Note: We only analyze "reviews" and ignore one-tap "ratings".
Note: We only analyze "reviews" and ignore one-tap "ratings".
Report Card
Pass Overall Grade
WARN
Deleted Reviews

WARN
Suspicious Reviewers

WARN
Reviewer Ease

WARN
Word Count Comparison

WARN
Reviewer Participation

PASS
Rating Trend

PASS
Unverified Purchases

PASS
Phrase Repetition

PASS
Overlapping Review History

PASS
Brand Repeats

PASS
Incentivized Reviews

Most Trusted Reviews
does not resemble the factory part or part in picture ... [Go to full review]
Feb 18, 2016
100%
TRUST
TRUST
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Verified Purchaser
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Take-Back Reviewer (6 deleted Reviews; avg. rating: 4.5)
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Brand Repeater (13 of 82 reviews for this brand; avg rating: 4.5)
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Easy Grader (avg. rating: 4.4)
Least Trusted Reviews
I have found AC Delco's parts to be the best ... [Go to full review]
Jul 27, 2015 1 of 1 found this helpful.
38%
TRUST
TRUST
-
Verified Purchaser
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Single-Day Reviewer (posted all reviews on Jul 27, 2015)
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Take-Back Reviewer (1 deleted Review; avg. rating: 5.0)
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Brand Repeater (9 of 30 reviews for this brand; avg rating: 4.7)
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Overrepresented Participation (posted 30 Reviews)
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Easy Grader (avg. rating: 4.6)
Analysis Details
Warn
Deleted Reviews

We discovered a total of 1 deleted Review for this product, with an average rating of 5. Even though deleted reviews don't affect the average rating, the fact that action was taken to delete reviews raises some red flags about the integrity of the reviews for the product as whole.
There are a few limitations to keep in mind regarding the Deleted Reviews test:
- We don't have a magic ability to collect every single deleted review; we can only identify reviews as deleted if we collect them on one date and then notice they are no longer visible on a subsequent date.
- We have no information on reviews that were never published in the first place.
- We also don't know why these reviews were removed. It could be action from the platform, personal decision by the review author, part of an entire account closure, even some data error on our part, etc.
Warn
Suspicious Reviewers

Take-Back Reviewers
66 of the 150 reviewers have had at least one of their past reviews for another product deleted. While this is more Take-Back Reviewers than we'd expect to see, it does not appear to have a significant impact on the overall rating.
Warn
Reviewer Ease

The ease score is the average rating for all reviews that a given reviewer submits. The average ease score for reviewers of this product is 4.4, while the average ease score for reviewers in this category is 4.3. While this discrepancy is rather large, it is not quite large enough to rule out the possibility of it being due random chance.
4.4 Product's Average Ease Score
4.3 Category's Average Ease Score
Read more about our Reviewer Ease test.
Warn
Word Count Comparison

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- 50%
- Have an overrepresented word count
In the graph above, we can see the distribution of review word counts for this product and the expected distribution for this category. We see the following 1 group with a statistically significant greater concentration than what we'd expect to see:In total, we found that 75 reviews (or 50%) are within an overrepresented word count group. This is an excessively high number of reviews in overrepresented word count groups.
Warn
Reviewer Participation

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- 55%
- From reviewers with an overrepresented participation
We see the following 2 participation groups with a statistically significant greater concentration than what we'd expect to see:In total, we found that 82 reviewers (or 55%) are within an overrepresented participation group. This is an excessively high number of reviewers in overrepresented participation groups.
Pass
Rating Trend

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- 0%
- Created on high-volume days
We counted 150 reviews for this product over the span of 3,274 days, an average of 0.0 reviews per day. If these reviews were created randomly, there would be a 99.9% chance that we would see 2 or fewer reviews on any given day. We didn't find any days exceeding this threshold.
Read more about our Rating Trend test.
Read more about our Rating Trend test.
Pass
Unverified Purchases

1 of the 150 total reviews for this product are unverified purchases. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Unverified purchases may be the result of Kindle Unlimited readers, buyers who didn't pay full price, or reviewers who did not purchase the product at Amazon. Read more about our Unverified Purchases test.
Pass
Phrase Repetition

Reviews that contain one of these phrases are NOT necessarily devalued; read more about how this test works here.
Common Phrases in Reviews:
Show MoreShow Less
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
2 reviews
(5.0/5)
(5.0/5)
3 reviews
(5.0/5)
(5.0/5)
4 reviews
(5.0/5)
(5.0/5)
21 of the 150 total reviews for this product use substantial repetitive phrases between them. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Overlapping Review History

Reviewers of this product have ALSO reviewed the following products:
4% also reviewed:
EPAuto 3/8-Inch Drive Click Torque Wrench 10-80... by EPAuto
3% also reviewed:
Continental Elite 4060935 Poly-V/Serpentine Belt by Continental Elite
3% also reviewed:
Brother TN-315BK DCP-9050 9055 9270 HL-4140 4150... by Brother
3% also reviewed:
Amazon Music [Android] by Amazon.com
3% also reviewed:
Fire TV Stick bundle with Echo Dot (2nd Gen) -... by Amazon
3% also reviewed:
K&N Motor Oil Bundle: 5W-30 Full Synthetic... by K&N
28 of the 150 reviewers have substantial overlapping product review history. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Brand Repeats

Brand Repeaters
30 of the 150 reviewers have reviewed other products for this brand. This is within an acceptable range and it does not appear to be significantly affecting the overall rating for this product.
Pass
Incentivized Reviews

On Oct 3, 2016, Amazon prohibited incentivized reviews, however we still test for them since there are still millions in our dataset.
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- 0%
- Admitted to receiving an incentive
We didn't detect any reviews that used language indicating they were incentivized.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.
Read more about our Incentivized Reviews test. Check out our study showing that Incentivized Reviewers are much more likely to leave a positive review.