ACDelco GM Original Equipment RC27
(10409635) Radiator Fill Cap
Price as of 2026-06-21. Check Amazon for the current price.
Quick Decision
Is This Right For You?
- •Buyers who prioritize quality over price in caps
- •Those who want a top-rated option — in the top 4% of caps by rating
- •ACDelco loyalists — the brand spans 40 products in our database
- •You're on a tight budget — $1 above the category average of $14
- •Ford Genuine F3AZ-6766-B Oil Cap offers a better rating (4.8/5) at a similar or lower price ($11)
- •ROVIKE Fuel Cap — 47% cheaper at $8 (Score A+)
- •Ford Genuine F3AZ-6766-B Oil Cap — higher rated at 4.8/5 ($11)
📊 Based on data analysis of 192 products in this category.
Mubboo Score: B
How we calculate the Mubboo Score
Quality (45%): customer rating, normalized to a 10-point scale
Popularity (35%): review volume vs the category leader, log-scaled
Value (20%): price position vs other caps
Computed from live Amazon rating, review count, and price across 192 caps available to US consumers · last refreshed 2026-06-21.
How It Compares
This Product ACDelco GM Original Equipment RC27 | Most Popular ROVIKE Fuel Cap | Best Rated Ford Genuine F3AZ-6766-B Oil Cap | Best Value MotoRad SAFETY LEVER RADIATOR CAP ST16 Fits Ram 1500 12–23 | |
|---|---|---|---|---|
| Price | $14.99 | $7.87 | $11.21 | $8 |
| Rating | 4.7/5 | 4.4/5 | 4.8/5 | 4.6/5 |
| Reviews | 1,950 | 11,988 | 1,438 | 1,178 |
| Mubboo Score | B | A+ | A- | A |
What People Say
Synthesized from 40 reviews · 100% verified purchases.
Ensure exact fit by checking vehicle compatibility charts, as some caps may not seal properly and could trigger the check engine light. Compare prices locally, and verify if tether attachment meets your needs.
- Easy installation and perfect fit
- Resolves check engine light or EVAP error codes
- Secure seal and contamination prevention
- Good value for money
- Durable construction
- Inconsistent fit across vehicle models
- Sealing issues causing check engine light to stay on
- Tether piece may not attach properly
- Price may be higher than local stores
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About ACDelco
- 40 products in our database
- Average rating: 4.7/5 across all products
- Price range: $4.27 – $181.99
- Categories: belts-hoses-and-pulleys-automotive, caps, Car Batteries, electrical-system-tools, engine-cooling-and-climate-control, engines-and-engine-parts-automotive
Other caps
Bottom Line
ACDelco GM Original Equipment RC27 earns Mubboo Score B. Priced at $15 — a premium option, above the category average of $14. Rated 4.7/5 from 1,950+ reviews. Strong buy if: buyers who prioritize quality over price in caps, those who want a top-rated option. Skip if: you're on a tight budget — ROVIKE Fuel Cap (Score A+, $8) may fit better.
Frequently Asked Questions
Is the ACDelco GM Original Equipment RC27 worth buying in 2026?
It earns a Mubboo Score of B, with a 4.7/5 rating from 1,950 reviews — better than 96% of caps we track.
How much does the ACDelco GM Original Equipment RC27 cost?
It is currently $14.99 — premium-tier pricing for caps.
How does the GM Original Equipment RC27 compare to other caps?
The category's most-reviewed alternative is the ROVIKE Fuel Cap (4.4/5, 11,988 reviews, $7.87). The GM Original Equipment RC27 carries a Mubboo Score of B vs A+.
Sources & References
Products available through US retailers. Prices in USD. Sales tax varies by state and is not included.
Mubboo may earn a commission on purchases made through affiliate links. This does not affect our Mubboo Score, product rankings, or editorial judgments. Prices are accurate as of the last sync (2026-06-21) and may change.