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LS Engine Gasket Kit 12558178 Fits 1999-2019 Chevy GMC 4.8L 5.3L 5.7L 6.0L
✅ In stock
F
Grade
Analysis Confidence
90%
Price verified Sep 21, 2026 3:15 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The price is modestly below what this product ordinarily sells for.
- 🏷️The listed retail price is trimmed by 5% at checkout.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
6.89/28
Recent Value
2.23/22
Market Standing
12.27/20
Deal Strength
3/20
Momentum
4/10
📝 Product Overview
🏪 Sold by
eAutor Direct
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓【Complete 11‑Piece Upper Gasket Kit】Contains upper‑engine sealing gaskets, direct OE replacement for 12612350,12639249,12633904,12558178,12630223, 12558177,12585673, 89060436,12551933,12611384,12573460. Manufactured to OEM specifications for direct‑fit replacement for Gen3 & Early Gen4 LS‑based engines.
✓【Broad Compatibility】 Compatible with Select 1999‑2019 Gen3 / Early Gen4 LS Vortec V8: 4.8L LR4,5.3L LM7/LM4/L33,5.7L LS1/LS6,6.0L LQ4/LY6 and wet‑sump LS3. Works for Chevrolet, GMC, Buick, Cadillac, Hummer, Saab trucks, SUVs and sedans.
✓【Material & Sealing Performance】 Multi‑layer steel, composite and premium rubber gaskets, factory pressure‑tested for high‑temperature engine operating conditions. Designed for top‑end engine rebuild to reduce oil, coolant and combustion‑gas leakage.
✓【DIY Mechanics & Auto Repair Shops】 Precisely sized for straightforward installation. Matches original mounting hole positions, no extra modification required for home installers and auto‑shop technicians. Ample FBA stock for single DIY LS engine repairs & long-term bulk restock for auto repair shops.
✓【Important Application Note】Does NOT fit dry‑sump LS3, LS7, LS9 engines, supercharged boosted applications, 2.8L diesel, or 4.3L V6 vehicles. NOT COMPATIBLE with pre‑1999 old‑generation Vortec or Duramax diesel engines. Year‑range listed in this listing (1999‑2019) is for reference only. Double‑check your engine RPO code, displacement and aspiration on the Amazon Confirmed Fit widget before purchasing to avoid wrong‑order returns.
✓【What You Will Receive】 Complete upper engine ls gasket set including all gaskets and seals corresponding to the 11 original factory part numbers below. 1pc Valley Cover Gasket (12558178), 1pc Engine Oil Pan Gasket (12612350), 1pc Rear Cover Gasket (12639249), 1pc Timing Cover Gasket (12633904), 1pc Oil Cooler Bypass Cover Gasket (12611384), 1pc Engine Oil Galley Plug (12573460), 1pc Rear Main Crankshaft Seal (89060436), 1pc Front Crankshaft Seal (12585673), 2pcs Water Crossover Pipe Seal (12551933), 2pcs Water Pump Gasket (12630223), 2pcs Knock Sensor Grommet (12558177).
⚙️ Specifications
23 x 11.2 x 1.1 inches
1.65 pounds
EAUTOR
B0CPFFYS1G
GM01
December 4, 2023
Package Dimensions
23 x 11.2 x 1.1 inches
Item Weight
1.5 pounds
Manufacturer
EAUTOR
ASIN
B0CPFFYS1G
Item model number
GM01
Date First Available
December 4, 2023
Best Sellers Rank
See Top 100 in Automotive
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