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Standard Ignition SS-591 Diesel Glow Plug RelayOE Quality 60-Day Returns
Part #: SS-591

Standard Ignition SS-591 Diesel Glow Plug Relay

185 vehicles fit this part
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Fitment: Buick, Chevrolet, Oldsmobile, GMC, Cadillac, and Pontiac, Regal, C10, C20, C30, G20, G30, K10, K20, K30, Delta 88, C10 Suburban, C20 Suburban, El Camino, K10 Suburban, K20 Suburban, K5 Blazer, P20, P30, C1500, C2500, C3500, Caballero, G2500, G3500, K1500, K2500, K3500, P2500, P3500, 98, Century, Electra, LeSabre, Riviera, DeVille, Eldorado, Fleetwood, Seville, Caprice, Celebrity, Impala, Malibu, Monte Carlo, Jimmy, Cutlass Ciera, Cutlass Supreme, Toronado, Bonneville, Grand Prix, Parisienne, Estate Wagon, C1500 Suburban, Custom Cruiser, Catalina, Laurentian, Cutlass, and Cutlass Salon
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Not what you need? See all Diesel Glow Plug Relay options

Diesel Glow Plug Relay for 1979-1985 GM Applications

Standard Ignition SS-591 is a 12-volt diesel glow plug relay built for direct replacement service on a wide range of Buick, Chevrolet, GMC, Cadillac, Oldsmobile, and Pontiac applications. It uses a 100-amp rating, male connectors, and a stud-and-blade terminal layout to support reliable glow plug circuit control in older diesel-equipped vehicles.

Key Features

  • 12-volt diesel glow plug relay with a 100 A amperage rating
  • Male connector design with 2 round connectors
  • 4 male terminals with stud and blade terminal type
  • Includes mounting bracket for installation support
  • Built with heavy-duty copper contacts and high-grade electrical materials
  • Pure copper windings and copper battery terminal studs help reduce resistance
  • Polyester-insulated magnet wire and cadmium-plated copper discs support lower voltage drop

Product Details

The Standard Ignition SS-591 is engineered for diesel starting and charging system service where dependable relay operation matters. Its internal copper contact design helps limit arcing, while the copper winding construction supports a stronger magnetic field for consistent electrical switching. The relay’s materials are selected to reduce voltage loss and improve current flow, which is important in demanding underhood conditions. This part cross-references Bosch 16136 for the same application. Standard Ignition SS-591 is a practical choice for restoring glow plug relay function on classic GM diesel platforms, including Chevrolet C10, GMC C1500, and Oldsmobile Delta 88 applications.

Common Problems This Part Can Help Solve

  • Hard starting on diesel engines caused by weak glow plug relay operation
  • Intermittent glow plug activation during cold starts
  • Voltage drop in the glow plug circuit
  • Electrical arcing that shortens relay service life
  • Relay failure from worn contacts or high-resistance connections

Installation Notes and Fitment

Compatible With 1979-1985 Buick Regal, 1980-1985 Chevrolet C10, 1982-1985 Chevrolet C20, 1982-1985 Chevrolet C30, 1983-1985 Chevrolet G20, 1983-1985 Chevrolet G30, 1985 Chevrolet K10, 1985 Chevrolet K20, 1985 Chevrolet K30, 1979-1984 Oldsmobile 98, and additional listed Buick, Cadillac, Chevrolet, GMC, Oldsmobile, and Pontiac diesel applications. Fitment also includes 1982-1984 Chevrolet K10, K20, K30, K5 Blazer, P20, and P30, plus 1980-1984 GMC C1500, C2500, C3500, G2500, G3500, K1500, K2500, K3500, P2500, and P3500. Verify connector style, terminal layout, and mounting location before installation; some applications note solenoid-type or 2-blade terminal requirements. The included bracket supports mounting, and the relay should be matched to the vehicle’s 12-volt electrical system.

Quality Assurance

Standard Ignition manufactures ignition and starting system components with controlled production processes and high-grade materials from component to finished part. SS-591 is built to support long service life in demanding electrical environments.

BrandStandard Ignition
Part NumberSS-591
Amperage Rating100 A
Connector GenderMale
Connector ShapeRound
ContentsIncludes Bracket
Continuous DutyNo
Mounting Bracket(s) IncludedYes
Terminal GenderMale
Terminal TypeStud & Blade
Voltage12

This part fits 185 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
1985BuickRegal4.3LV6N/A
1985ChevroletC10DIESELN/A
1985ChevroletC20DIESELN/A
1985ChevroletC30DIESELN/A
1985ChevroletG206.2LV8DIESELN/A
1985ChevroletG306.2LV8DIESELN/A
1985ChevroletK10DIESELN/A2 Blade Term.
1985ChevroletK20DIESELN/A2 Blade Term.
1985ChevroletK30DIESELN/A2 Blade Term.
1985OldsmobileDelta 88DIESELN/A
1984ChevroletC10DIESELN/A
1984ChevroletC10 Suburban6.2LV8DIESELN/A
1984ChevroletC20DIESELN/A
1984ChevroletC20 Suburban6.2LV8DIESELN/A
1984ChevroletC30DIESELN/A
1984ChevroletEl Camino5.7LV8DIESELN/A
1984ChevroletG206.2LV8DIESELN/A
1984ChevroletG306.2LV8DIESELN/A
1984ChevroletK10DIESELN/A
1984ChevroletK10 SuburbanDIESELN/A
1984ChevroletK20DIESELN/A
1984ChevroletK20 Suburban6.2LV8DIESELN/A
1984ChevroletK30DIESELN/A
1984ChevroletK5 Blazer6.2LV8DIESELN/A
1984ChevroletP20DIESELN/A
1984ChevroletP30DIESELN/A
1984GMCC1500DIESELN/A
1984GMCC2500DIESELN/A
1984GMCC3500DIESELN/A
1984GMCG2500DIESELN/A
1984GMCG3500DIESELN/A
1984GMCK1500DIESELN/A
1984GMCK2500DIESELN/A
1984GMCK3500DIESELN/A
1984GMCP2500DIESELN/A
1984GMCP3500DIESELN/A
1984Oldsmobile98DIESELN/A
1983BuickCenturyDIESELN/A
1983BuickLeSabreDIESELN/A
1983BuickRegalDIESELN/ASolenoid Type
1983BuickRivieraDIESELN/A
1983CadillacDeVilleDIESELN/ASolenoid Type
1983CadillacEldoradoDIESELN/ASolenoid Type
1983CadillacFleetwoodDIESELN/ASolenoid Type
1983CadillacSevilleDIESELN/ASolenoid Type
1983ChevroletC10DIESELN/A
1983ChevroletC10 SuburbanDIESELN/A
1983ChevroletC20DIESELN/A
1983ChevroletC20 SuburbanDIESELN/A
1983ChevroletC30DIESELN/A
1983ChevroletCapriceDIESELN/A
1983ChevroletCelebrityDIESELN/A
1983ChevroletEl Camino5.7LV8DIESELN/A
1983ChevroletG206.2LV8DIESELN/A
1983ChevroletG306.2LV8DIESELN/A
1983ChevroletImpalaDIESELN/A
1983ChevroletK10DIESELN/A
1983ChevroletK10 SuburbanDIESELN/A
1983ChevroletK20DIESELN/A
1983ChevroletK20 SuburbanDIESELN/A
1983ChevroletK30DIESELN/A
1983ChevroletK5 Blazer6.2LV8DIESELN/A
1983ChevroletMalibu4.3LV6DIESELN/A
1983ChevroletMalibu5.7LV8N/A
1983ChevroletMonte Carlo5.7LV8DIESELN/A
1983ChevroletMonte Carlo4.3LV6DIESELN/A
1983ChevroletP20DIESELN/A
1983ChevroletP30DIESELN/A
1983GMCC1500DIESELN/A
1983GMCC2500DIESELN/A
1983GMCC3500DIESELN/A
1983GMCG2500DIESELN/A
1983GMCG3500DIESELN/A
1983GMCJimmyDIESELN/A
1983GMCK1500DIESELN/A
1983GMCK2500DIESELN/A
1983GMCK3500DIESELN/A
1983GMCP2500DIESELN/A
1983GMCP3500DIESELN/A
1983Oldsmobile98DIESELN/A
1983OldsmobileCutlass CieraDIESELN/A
1983OldsmobileCutlass SupremeDIESELN/A
1983OldsmobileDelta 88DIESELN/A
1983OldsmobileToronadoDIESELN/A
1983PontiacBonneville5.7LV8DIESELN/ASolenoid Type
1983PontiacGrand Prix5.7LV8DIESELN/ASolenoid Type
1983PontiacParisienneDIESELN/A
1982BuickCentury4.3LV6DIESELN/AFits without skirt
1982BuickLeSabreDIESELN/A
1982BuickRegalDIESELN/ASolenoid Type
1982BuickRivieraDIESELN/A
1982CadillacDeVilleDIESELN/ASolenoid Type
1982CadillacEldoradoDIESELN/ASolenoid Type
1982CadillacFleetwoodDIESELN/ASolenoid Type
1982CadillacSevilleDIESELN/ASolenoid Type
1982ChevroletC10DIESELN/A
1982ChevroletC10 SuburbanDIESELN/A
1982ChevroletC20DIESELN/A
1982ChevroletC20 SuburbanDIESELN/A
1982ChevroletC30DIESELN/A
1982ChevroletCapriceDIESELN/A
1982ChevroletCelebrityDIESELN/A
1982ChevroletImpalaDIESELN/A
1982ChevroletK10DIESELN/A
1982ChevroletK10 SuburbanDIESELN/A
1982ChevroletK20DIESELN/A
1982ChevroletK20 SuburbanDIESELN/A
1982ChevroletK30DIESELN/A
1982ChevroletK5 Blazer6.2LV8DIESELN/A
1982ChevroletMalibu4.3LV6DIESELN/A
1982ChevroletMalibu5.7LV8DIESELN/A
1982ChevroletMonte Carlo5.7LV8DIESELN/A
1982ChevroletMonte Carlo4.3LV6DIESELN/A
1982ChevroletP20DIESELN/A
1982ChevroletP30DIESELN/A
1982GMCC1500DIESELN/A
1982GMCC2500DIESELN/A
1982GMCC3500DIESELN/A
1982GMCJimmyDIESELN/A
1982GMCK1500DIESELN/A
1982GMCK2500DIESELN/A
1982GMCK3500DIESELN/A
1982GMCP2500DIESELN/A
1982GMCP3500DIESELN/A
1982Oldsmobile98DIESELN/A
1982OldsmobileCutlass SupremeDIESELN/A
1982OldsmobileDelta 88DIESELN/A
1982OldsmobileToronadoDIESELN/A
1982PontiacBonneville5.7LV8DIESELN/ASolenoid Type
1982PontiacGrand Prix5.7LV8DIESELN/ASolenoid Type
1982PontiacParisienneDIESELN/A
1981BuickCentury5.7LV8DIESELN/A
1981BuickLeSabreDIESELN/A
1981BuickRegalDIESELN/ASolenoid Type
1981BuickRivieraDIESELN/A
1981CadillacDeVilleDIESELN/ASolenoid Type
1981CadillacEldoradoDIESELN/ASolenoid Type
1981CadillacFleetwoodDIESELN/ASolenoid Type
1981CadillacSevilleDIESELN/ASolenoid Type
1981ChevroletC10DIESELN/A
1981ChevroletCapriceDIESELN/A
1981ChevroletImpalaDIESELN/A
1981GMCC1500DIESELN/A
1981GMCC1500 SuburbanDIESELN/A
1981Oldsmobile98DIESELN/A
1981OldsmobileCustom Cruiser5.7LV8DIESELN/A
1981OldsmobileDelta 88DIESELN/A
1981OldsmobileToronadoDIESELN/ASolenoid Type
1981PontiacBonneville5.7LV8DIESELN/ASolenoid Type
1981PontiacCatalina5.7LV8DIESELN/ASolenoid Type
1981PontiacGrand Prix5.7LV8DIESELN/ASolenoid Type
1981PontiacLaurentianDIESELN/A
1981PontiacParisienneDIESELN/A
1980BuickLeSabreDIESELN/A
1980BuickRivieraDIESELN/A
1980CadillacDeVilleDIESELN/ASolenoid Type
1980CadillacEldorado5.7LV8DIESELN/ASolenoid Type
1980CadillacFleetwoodDIESELN/ASolenoid Type
1980CadillacSevilleDIESELN/ASolenoid Type
1980ChevroletC10DIESELN/A
1980ChevroletCapriceDIESELN/A
1980ChevroletImpalaDIESELN/A
1980GMCC1500DIESELN/A
1980Oldsmobile98DIESELN/A
1980OldsmobileCustom Cruiser5.7LV8DIESELN/A
1980OldsmobileCutlassDIESELN/A
1980OldsmobileCutlass SalonDIESELN/A
1980OldsmobileCutlass SupremeDIESELN/A
1980OldsmobileDelta 88DIESELN/A
1980OldsmobileToronadoDIESELN/ASolenoid Type
1980PontiacBonneville5.7LV8DIESELN/ASolenoid Type
1980PontiacCatalina5.7LV8DIESELN/ASolenoid Type
1980PontiacLaurentianDIESELN/A
1980PontiacParisienneDIESELN/A
1979CadillacDeVilleDIESELN/A
1979CadillacEldorado5.7LV8DIESELN/A
1979CadillacFleetwoodDIESELN/A
1979CadillacSevilleDIESELN/A
1979Oldsmobile985.7LV8DIESELN/A
1979OldsmobileCustom Cruiser5.7LV8DIESELN/A
1979OldsmobileCutlassDIESELN/A
1979OldsmobileCutlass SalonDIESELN/A
1979OldsmobileCutlass SupremeDIESELN/A
1979OldsmobileDelta 88DIESELN/A
1979OldsmobileToronado5.7LV8DIESELN/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

00560580161361M14662251442456-2431DR1006GPR1GPR100SBGPR500SS591TSW112

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.