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Champion L77JC4 Spark Plug Copper Plus Replaces M40ffx

5.04 product ratings
Marine Motor Supply (64568)
98.5% positive feedback
Price:
$6.91
Free shipping
Estimated delivery Fri, Sep 5 - Thu, Sep 11
Returns:
30 days returns. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Condition:
New

About this product

Product Identifiers

BrandChampion
Manufacturer Part NumberL77JC4
eBay Product ID (ePID)508253641

Product Key Features

Thread Diameter14 mm
Performance PartYes
Fuel TypeGasoline
MaterialCopper
California Prop 65 WarningN/A
TypeSpark Plug
OE/OEM Part NumberL77jc4

Dimensions

Item LengthN/A

All listings for this product

Buy It Now
New
S13 Genuine Champion L77JC4 Spark Plug #821M OEM New Factory Boat Parts
item 1 S13 Genuine Champion L77JC4 Spark Plug #821M OEM New Factory Boat Parts
$6.91
Free shipping
L77JC4 821 CHAMPION ENGINE SPARK PLUG COPPER PLUS FOR OUTBOARDS SNOWMOBILES
item 2 L77JC4 821 CHAMPION ENGINE SPARK PLUG COPPER PLUS FOR OUTBOARDS SNOWMOBILES
$7.25
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CHAMPION MARINE SPARK PLUG - CHAMPION L77JC4
item 3 CHAMPION MARINE SPARK PLUG - CHAMPION L77JC4
$4.99
Champion Spark Plug L77JC4
item 4 Champion Spark Plug L77JC4
$1.79
+$5.95 shipping
CHAMPION COPPER MARINE SPARK PLUG P/N L77JC4,821M.
item 5 CHAMPION COPPER MARINE SPARK PLUG P/N L77JC4,821M.
$4.00
+$4.00 shipping
Champion Marine Spark Plug 14mm Thread & 20mm Hex 821-1 L77JC4
item 6 Champion Marine Spark Plug 14mm Thread & 20mm Hex 821-1 L77JC4
$8.90
Free shipping
SPARK PLUG 24- L77JC4 821M MARINE ENGINES OUTBOARDS INBOARD I/O CHAMPION EACH
item 7 SPARK PLUG 24- L77JC4 821M MARINE ENGINES OUTBOARDS INBOARD I/O CHAMPION EACH
$9.95
Free shipping
Champion Spark Plug Part Number - L77JC4
item 8 Champion Spark Plug Part Number - L77JC4
$9.99
Free shipping
NORS Champion L77JC4 Marine Spark Plug 821 (1)
item 9 NORS Champion L77JC4 Marine Spark Plug 821 (1)
$10.00
Free shipping
SP2 Genuine Champion L77JC4 Spark Plug OEM New Factory Boat Parts
item 10 SP2 Genuine Champion L77JC4 Spark Plug OEM New Factory Boat Parts
$5.47
+$4.95 shipping
Champion pack of 4 #L77JC4 Copper Plus Spark Plug 821.
item 11 Champion pack of 4 #L77JC4 Copper Plus Spark Plug 821.
$14.40
*NEW* (LOT OF 3) 0810 Champion Spark Plug L77JC4
item 12 *NEW* (LOT OF 3) 0810 Champion Spark Plug L77JC4
$18.00
Free shipping
Champion 821 L77JC4 79112 Copper Plus Spark Plugs Qty 6
item 13 Champion 821 L77JC4 79112 Copper Plus Spark Plugs Qty 6
$20.00
+$5.95 shipping
10 EACH Champion L77JC4 Marine Spark Plugs Yamaha Bombardier 821-114
item 14 10 EACH Champion L77JC4 Marine Spark Plugs Yamaha Bombardier 821-114
$41.88
Free shipping
NOS Champion Spark Plug L77JC4 Lot of 18
item 15 NOS Champion Spark Plug L77JC4 Lot of 18
$79.99
Free shipping
Champion 821 Copper Plus Spark Plug [821M, L77JC4]
item 16 Champion 821 Copper Plus Spark Plug [821M, L77JC4]
$2.99
Champion L77JC4
item 17 Champion L77JC4
$4.99
NIB Johnson E. Spark Plug Champion L77JC4 502194
item 18 NIB Johnson E. Spark Plug Champion L77JC4 502194
$7.89
4) Champion L77JC4 Marine Spark Plugs - Yamaha Bombardier - 821
item 19 4) Champion L77JC4 Marine Spark Plugs - Yamaha Bombardier - 821
$18.99
listings for this product

Ratings and Reviews

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5.0
4 product ratings
  • 4 users rated this 5 out of 5 stars
  • 0 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • by joelpw10
    Jul 31, 2025

    Perfect spark plugs. I totally rebuilt a...

    Perfect spark plugs. I totally rebuilt an 82' Johnson outboard and it started on the first pull. Thanks👍🏻

    Verified purchase: YesCondition: New

  • by mahu.us.xw1ut2h
    Jun 07, 2017

    L77jc4 Spark plugs

    Works on a old Johnson outboard motor. Champion is the best!

    Verified purchase: YesCondition: New

  • by 9i4fvymsqoa@deleted
    Jun 07, 2017

    Hard to find outboard spark plug

    Works as it should.

    Verified purchase: YesCondition: New

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