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Product guide

Moroso 52056 Ultra Series Red Spark Plug Wire Set

Moroso 52056 Ultra Series spark plug wires are listed for early Mopar Chrysler 273, 318, 340 and 360 small-block engines. The set has red unsleeved wires with straight spark-plug and distributor ends, so confirm the engine and terminal configuration before ordering.

At a glance

  • Listed for Mopar Chrysler small-block 273, 318, 340 and 360 applications.
  • Red, unsleeved wires with straight ends at both the plugs and distributor.
  • Silicone plug boots and a fiberglass core are listed.
Price
$71.31Save 19%

Reference price: $87.81

Price checked: Nov 13, 2026

View offer

Often bought together

Pros and cons

Pros

  • Straight plug and distributor ends are clearly specified for buyers matching that terminal layout.
  • The listed engine applications and Non- HEI description help narrow compatibility checks.
  • Red wire colour is an easy-to-identify alternative to the listed subtle black option.

Technical specifications

14 specifications
Identity
BrandMoroso
ModelUltra Wires
Part number52056
Fit and configuration
Listed engine fitmentMopar 273, 318, 340, 360
Plug endsStraight Plug Ends
Distributor endsStraight Distributor Ends
Ignition-system noteNon- HEI
Wire finish and constructionRed Wire
SleevingUnsleeved
Special featuresNon Sleeved, Silicone Plug Boots, Fiberglass core
Dimensions and installation
Dimensions listed23.88 x 23.88 x 9.14 cm; 797 g
Weight listed797 g
Other details
ExteriorGloss
Country of originUSA

What to know before buying

  • Confirm the exact engine and ignition setup before purchase. The listing specifies early Mopar applications and Non- HEI, but does not provide vehicle-year coverage or wire lengths.

Who is it for?

A good fit for

  • Owners of a compatible early Mopar Chrysler 273, 318, 340 or 360 small-block using straight plug and distributor ends.
  • Buyers seeking a red, unsleeved wire set with silicone plug boots and a fiberglass core.

Less suited to

  • Buyers needing sleeved wires or a different plug-end or distributor-end angle.
  • Applications requiring HEI compatibility or a vehicle-specific fitment confirmation not established by the listing.

Customer reviews on Amazon

4.2 / 5 · 28 ratings
  • 5 stars71%71%
  • 4 stars13%13%
  • 3 stars0%0%
  • 2 stars0%0%
  • 1 star16%16%

Aggregate customer ratings lean positive, with a substantial share in the five-star category, but a notable one-star share makes the overall picture less uniform. The supplied material contains no customer comments explaining either reaction, so it cannot establish specific strengths or faults. For buyers, the listing's engine fitment and straight-end configuration are more useful checks than the rating alone.

Frequently asked questions

Which engines are listed for the Moroso 52056?

The listing names Mopar Chrysler 273, 318, 340 and 360 engines. Confirm that the specific vehicle and ignition setup match before ordering.

Are these wires sleeved?

No. The product description calls them unsleeved and non-sleeved.

What are the terminal ends like?

The listing specifies straight plug ends and straight distributor ends.

Are these listed for HEI systems?

The product description says Non- HEI. The listing does not confirm HEI compatibility.

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