NHTSA ID Number: 10183414
Manufacturer Communication Number: TSB 20-2370
Summary
Some 2020 F-53 Motorhome Chassis vehicles equipped with a 7.3L engine may exhibit an illuminated malfunction indicator lamp (MIL) with a misfire or lack of power with diagnostic trouble codes (DTC) P0300, P0316, and/or P0301-P0304 built on or before 28-Sep-2020. This may be due to damaged spark plug wire(s). To correct the condition, follow the service procedure to modify the passenger side engine compartment air baffle and replace the engine spark plug wires.
Engine: 7.3L
Issue: Some 2020 F-53 Motorhome Chassis vehicles equipped with a 7.3L engine may exhibit an illuminated malfunction indicator lamp (MIL) with a misfire or lack of power with diagnostic trouble codes (DTC) P0300, P0316, and/or P0301-P0304 built on or before 28-Sep-2020. This may be due to damaged spark plug wire(s). To correct the condition, follow the service procedure to modify the passenger side engine compartment air baffle and replace the engine spark plug wires.
Action: Follow the Service Procedure steps to correct the condition on vehicles that meet all of the following criteria:
- 2020 F-53 Motorhome Chassis
- 7.3L engine
- Illuminated MIL with DTCs P0300, P0316, P0301, P0302, P0303 and/or P0304 with a misfire or lack of power
NOTE: Part quantity refers to the number of that service part number required, which may be different than the number of individual pieces. Service part numbers contain 1 piece unless otherwise stated. “As Needed” indicates the part is required but the number may vary or is not a whole number; parts can be billed out as non-whole numbers, including less than 1.
Parts
| Description | Quantity | Part Number | |
| Package Contains 1 Piece, 8 Pieces Required | Ignition Wire | 8 | LC3Z-12286-C |
Service Procedure
1. Locate the passenger side engine compartment baffle. Does the baffle completely cover the area between the radiator assembly and the battery try as shown in Figure 1?
(1). Yes – proceed to Step 2.
(2). No – this article does not apply. Refer to the Powertrain Control Emission Diagnosis Manual (PC/ED) for normal diagnosis.
Figure 1
2. Trim the engine cooling baffle on the passenger side using a suitable cutting tool. (Figures 2-4)
Figure 2
| Item | Description |
| 1 | 297 mm |
| 2 | 295 mm |
Figure 3
Figure 4
3. Replace all 8 spark plug wires on the engine. Refer to the Workshop Manual (WSM), Section 303-07.
2 Affected Products
Vehicles
1 Associated Document
Manufacturer Communications
20-2370
09 November 2020
MC-10183414-0001.pdf 445.177KB
- Country of Origin : China
- Package Dimensions: 19.812 L x 27.432 H x 9.144 W (centimeters)
- Package Weight: 2.4 pounds
- Fit type: Vehicle Specific
- Features & Benefits - Extremely high EMI/RFI suppression along with a very low resistance to help deliver the most spark possible. Conductor style: spiral core，distributor boot material: silicone, heavy duty 8.0mm diameter silicone jacket to protect the Kevlar spiral wound core from heat, moisture and chemicals.
- Premium Quality - These sturdy spark plug wires are durable and guaranteed to withstand wear and tear. The high temperature silicone boots provide excellent heat and oil resistance, while the stainless steel and brass terminals provide excellent conductivity to maximize performance.
- Fit for Small Block Fords - Fits HEI (High Electronic Ignition) systems with Small Block engines including SBF 302/5.0L 351/5.8L V8. It only fits for small block V8 and doesn't fit for point ignition system.
- Notice - This high performance racing spark plug wire set has black 90 degree boot for HEI distributor, 135 degree (sometimes called 45 degree) boot for spark plug and coil-in-cap HEI design system. This Set Is Designed To Be Used With HEI Distributors, It Does Not Include a Coil Wire.
- 12-Month Warranty - This spark plug wire set comes with 12-month warranty, if it ever fails on your vehicle, simply contact us for free replacement or refund.
- COMPATIBILITY: The 10.2mm spark plug wire set replacement for Ford
F-150 1979-1995, Mustang 1964-1973 and 1979-1995; Replacement for Ford 5.0L 5.8L, SBF 302 Windsor - PACKAGE INCLUDES: 10PCS 10.2MM Spark plug ignition coil wires
- PREMIUM MATERIAL: This spark plugs wires set features an advanced silicone sheath that provides extreme high-temperature protection and radio frequency interference suppression for sophisticated electronic systems
- DURABILITY: The shell of this spark plug wire set is made of heat-resistant silicone material, strengthened shell, strong insulation performance, and the copper core inside is resistant to high temperature and can work in high temperature environment
- FUNCTION: The 10.2mm spark plug wire set can transmit the electricity generated by the ignition coil to the cylinder, so that a spark between the spark plugs ignites the mixture, thus starting the engine
- Application: Replacement for Ford Ranger Mustang Explorer Sport Track V6 4.0
- Good Solution: The spark plug adopts insulation technology and is resistant to high temperature and pressure
- Package Includes: 6Pcs Spark Plug Ignition Wire Sets
- Quality: The core wire uses silicone conductor, stable resistance; Multi-layer reinforcement of silk body, longer service life
- Please compare the specific applicable models listed at below to make sure it'll fit
- AFTER MARKET HIGH PREMIUM QUALITY
- RFI Suppression
- UltraLow Resistance KEVLAR Core
- Ultra High Strength/High Temp. Silicone Boots and Sleeve
- Please make sure to check fitment below
Last update on 2026-06-19 / Affiliate links / Images from Amazon Product Advertising API
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Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Emissions Warranty/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/Emissions Warranty/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time 2020 F-53 Motorhome Chassis 7.3L: Retrieve DTCs Modify The Passenger Side Air Baffle And Replace Eight (8) Spark Plug Wires (Do Not Use With Any Other Labor Operations) MT202370 Actual Time Repair/Claim Coding Causal Part: 12286 Condition Code: 42
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