SKU: 32916289764

Extreme Output GM HEI Distributor Cap - 84111

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Description

Extreme Output GM HEI Distributor Cap - 84111Overview: With the introduction of our 20 Amp Extreme HEI Module, we needed an HEI Cap and Rotor that could withstand the high output. The answer was to mold our own HEI Cap, Rotor and Coil Cover. The Cap and Rotor will fit our HEI Pro Billet Distributor, PN 8365. Features: Application: Year Make Model Submodel Engine Size 1977 1986 Pontiac Firebird 3. 74 8 V 1977 1986 Chevrolet K20 Suburban 3. 74 8 V 1979 1988 GMC G3500 4 8 V 1981 1986 GMC G2500 3.

Overview:

With the introduction of our 20 Amp Extreme HEI Module, we needed an HEI Cap and Rotor that could withstand the high output. The answer was to mold our own HEI Cap, Rotor and Coil Cover. The Cap and Rotor will fit our HEI Pro-Billet Distributor, PN 8365.

Features:

    Application:

    Year Make Model Submodel Engine Size
    1977 - 1986 Pontiac Firebird 3.74/8 V
    1977 - 1986 Chevrolet K20 Suburban 3.74/8 V
    1979 - 1988 GMC G3500 4/8 V
    1981 - 1986 GMC G2500 3.74/8 V
    1978 - 1980 Oldsmobile Cutlass Salon 3.74/8 V
    1978 - 1980 Oldsmobile Cutlass 3.74/8 V
    1975 - 1981 Chevrolet Malibu 4/8 V
    1977 - 1986 GMC Jimmy 3.74/8 V
    1975 - 1978 GMC C15 Suburban 4.25/8 V
    1979 - 1986 GMC G1500 4/8 V
    1976 GMC K15 4.25/8 V
    1980 - 1986 GMC C2500 3.74/8 V
    1979 - 1986 GMC G2500 4/8 V
    1979 - 1986 GMC K3500 4/8 V
    1975 - 1986 Chevrolet K20 Suburban 4/8 V
    1975 - 1978 GMC C15 4.25/8 V
    1977 - 1978 GMC K15 3.74/8 V
    1975 - 1981 Chevrolet Camaro 4/8 V
    1980 - 1986 Chevrolet G20 3.74/8 V
    1979 - 1986 GMC C1500 4/8 V
    1977 Oldsmobile Custom Cruiser 4/8 V
    1975 - 1986 Chevrolet C20 4.25/8 V
    1979 - 1986 GMC C3500 4/8 V
    1979 - 1982 GMC K1500 Suburban 3.74/8 V
    1977 - 1980 Chevrolet K30 4.13/8 V
    1979 - 1982 GMC Caballero 3.5/8 V
    1975 - 1980 Chevrolet C10 4.25/8 V
    1977 - 1986 Chevrolet C10 3.74/8 V
    1977 - 1986 Chevrolet K30 4/8 V
    1977 - 1986 Chevrolet Caprice 3.74/8 V
    1977 - 1986 Chevrolet K10 Suburban 3.74/8 V
    1975 - 1986 Chevrolet K20 4/8 V
    1978 - 1986 GMC Caballero 3.74/8 V
    1975 - 1978 GMC G35 4/8 V
    1975 - 1986 Chevrolet C30 4.25/8 V
    1975 - 1978 GMC K25 4.13/8 V
    1977 - 1979 Oldsmobile Omega 4/8 V
    1976 - 1978 Chevrolet K5 Blazer 4.25/8 V
    1980 GMC C2500 Suburban 4.13/8 V
    1979 - 1986 GMC K3500 4.25/8 V
    1975 - 1978 GMC C25 Suburban 4.25/8 V
    1979 - 1986 GMC K2500 Suburban 4/8 V
    1978 Oldsmobile Cutlass Supreme 4/8 V
    1976 - 1980 Chevrolet C20 Suburban 4.13/8 V
    1979 GMC G3500 4.13/8 V
    1979 - 1986 GMC C3500 4.25/8 V
    1976 - 1978 GMC K25 4.25/8 V
    1975 - 1985 Chevrolet Impala 4/8 V
    1979 - 1986 GMC C2500 Suburban 4.25/8 V
    1979 - 1986 GMC K2500 4/8 V
    1975 - 1980 Chevrolet K10 4.13/8 V
    1975 - 1986 Chevrolet C20 Suburban 4.25/8 V
    1977 - 1986 Chevrolet K5 Blazer 3.74/8 V
    1977 - 1986 Chevrolet C20 3.74/8 V
    1979 - 1982 Chevrolet Monte Carlo 3.5/8 V
    1975 - 1978 GMC G25 4.13/8 V
    1975 - 1986 Chevrolet C10 4/8 V
    1975 Chevrolet Bel Air 4.25/8 V
    1975 - 1986 GMC Jimmy 4/8 V
    1976 - 1986 Chevrolet Camaro 3.74/8 V
    1977 - 1979 Oldsmobile Omega 3.74/8 V
    1976 - 1978 Chevrolet C30 4.13/8 V
    1976 - 1977 Chevrolet Monte Carlo /
    1976 - 1979 Chevrolet Monza 3.74/8 V
    1979 - 1986 GMC K1500 4/8 V
    1975 - 1986 Chevrolet G30 4/8 V
    1978 - 1986 Chevrolet Monte Carlo 3.74/8 V
    1975 - 1978 GMC C15 4/8 V
    1978 - 1986 Pontiac Grand Prix 3.74/8 V
    1975 - 1978 GMC K25 4/8 V
    1975 - 1976 Chevrolet Malibu 4.13/8 V
    1975 - 1978 GMC C15 Suburban 4/8 V
    1978 - 1980 Pontiac Grand Am 3.74/8 V
    1975 - 1986 Chevrolet K10 Suburban 4/8 V
    1976 - 1977 GMC Sprint 3.74/8 V
    1979 - 1986 GMC C2500 4.25/8 V
    1975 - 1986 Chevrolet C20 4/8 V
    1975 - 1979 GMC Jimmy 4.13/8 V
    1975 - 1978 GMC K15 Suburban 4/8 V
    1977 - 1986 Chevrolet C20 Suburban 3.74/8 V
    1975 - 1976 Chevrolet El Camino 4.13/8 V
    1975 - 1986 Chevrolet C20 Suburban 4/8 V
    1975 - 1980 Chevrolet C10 Suburban 4.25/8 V
    1976 - 1983 Chevrolet Malibu 3.74/8 V
    1979 - 1986 GMC G1500 3.74/8 V
    1975 - 1978 GMC K25 Suburban 4/8 V
    1977 - 1986 Chevrolet K10 3.74/8 V
    1975 - 1979 Chevrolet Nova 4/8 V
    1975 - 1986 Chevrolet G20 4/8 V
    1975 - 1986 Chevrolet G10 4/8 V
    1976 - 1980 Chevrolet C20 4.13/8 V
    1975 Chevrolet Laguna 4.13/8 V
    1976 - 1986 Chevrolet Corvette /
    1976 - 1978 GMC C15 4.13/8 V
    1977 - 1986 Chevrolet G10 3.74/8 V
    1980 - 1982 Chevrolet Impala 3.5/8 V
    1979 - 1980 GMC K1500 Suburban 4.13/8 V
    1977 - 1985 Chevrolet Impala 3.74/8 V
    1979 - 1986 GMC C1500 Suburban 3.74/8 V
    1982 - 1986 GMC C2500 Suburban 3.74/8 V
    1975 - 1977 GMC Sprint 4/8 V
    1978 - 1980 Oldsmobile Cutlass Calais 3.74/8 V
    1978 - 1979 Pontiac Grand LeMans 4/8 V
    1975 - 1980 Chevrolet G20 4.13/8 V
    1975 - 1986 Chevrolet C10 Suburban 4/8 V
    1979 - 1986 GMC C2500 4/8 V
    1975 - 1978 GMC G25 4/8 V
    1976 - 1978 Chevrolet K20 4.25/8 V
    1977 - 1980 Pontiac Grand LeMans 3.74/8 V
    1975 - 1986 Chevrolet Caprice 4/8 V
    1975 - 1986 Chevrolet K10 4/8 V
    1977 - 1978 GMC K35 4.13/8 V
    1977 - 1978 GMC K25 3.74/8 V
    1975 - 1979 Chevrolet G30 4.13/8 V
    1979 - 1980 GMC C1500 4.13/8 V
    1981 - 1986 GMC K1500 3.74/8 V
    1976 - 1980 Chevrolet K20 Suburban 4.13/8 V
    1975 - 1979 Chevrolet K10 Suburban 4.13/8 V
    1977 - 1979 Pontiac Phoenix 3.74/8 V
    1975 - 1980 Chevrolet K20 4.13/8 V
    1979 - 1986 GMC C1500 Suburban 4/8 V
    1979 - 1980 GMC K2500 Suburban 4.13/8 V
    1977 - 1979 Buick Skylark 4/8 V
    1977 Pontiac Ventura 4/8 V
    1975 - 1986 Chevrolet C30 4/8 V
    1979 - 1980 GMC K2500 4.13/8 V
    1977 - 1978 GMC K25 Suburban 3.74/8 V
    1980 - 1981 Chevrolet Camaro 3.5/8 V
    1975 - 1986 Chevrolet K5 Blazer 4/8 V
    1975 - 1978 GMC K25 Suburban 4.13/8 V
    1977 - 1978 GMC K15 Suburban 3.74/8 V
    1978 - 1979 Pontiac Firebird 4/8 V
    1983 - 1986 Pontiac Parisienne 3.74/8 V
    1979 - 1982 Chevrolet El Camino 3.5/8 V
    1975 - 1979 Chevrolet El Camino 4/8 V
    1977 - 1978 GMC C15 3.74/8 V
    1975 Chevrolet Nova 3.67/8 V
    1976 - 1978 GMC C35 4.13/8 V
    1975 - 1978 GMC G35 4.13/8 V
    1975 - 1976 Chevrolet G30 4.25/8 V
    1977 - 1986 Chevrolet K30 4.25/8 V
    1975 - 1978 GMC K15 4/8 V
    1977 - 1980 Pontiac LeMans 3.74/8 V
    1979 - 1986 GMC C1500 3.74/8 V
    1978 - 1979 Oldsmobile Cutlass 4/8 V
    1975 Chevrolet Impala 4.25/8 V
    1975 - 1978 GMC C35 4/8 V
    1977 - 1979 Oldsmobile Starfire 3.74/8 V
    1977 - 1985 Chevrolet K20 3.74/8 V
    1976 GMC G35 4.25/8 V
    1975 - 1978 GMC G15 4/8 V
    1976 Chevrolet Impala /
    1979 - 1986 GMC C2500 Suburban 4/8 V
    1975 Chevrolet Monte Carlo 4/8 V
    1976 - 1979 Chevrolet Nova 3.74/8 V
    1979 - 1982 Chevrolet Malibu 3.5/8 V
    1977 - 1978 GMC C15 Suburban 3.74/8 V
    1977 - 1979 Buick Skylark 3.74/8 V
    1979 - 1986 GMC K1500 Suburban 4/8 V
    1977 - 1979 Pontiac Phoenix 4/8 V
    1978 - 1979 Pontiac Sunbird 3.74/8 V
    1977 - 1980 Buick Regal 3.74/8 V
    1975 - 1976 GMC G25 4.25/8 V
    1975 - 1978 GMC C25 Suburban 4/8 V
    1975 - 1978 GMC C25 4.25/8 V
    1977 - 1978 GMC G15 3.74/8 V
    1978 - 1979 GMC Caballero 4/8 V
    1977 - 1979 Chevrolet C10 Suburban 3.74/8 V
    1979 GMC C2500 4.13/8 V
    1976 - 1986 Chevrolet El Camino 3.74/8 V
    1977 - 1978 GMC C25 Suburban 3.74/8 V
    1977 - 1980 Buick Century 3.74/8 V
    1977 - 1979 Buick Century 4/8 V
    1979 - 1980 GMC C1500 Suburban 4.25/8 V
    1975 - 1978 GMC K15 4.13/8 V
    1975 - 1979 Chevrolet K5 Blazer 4.13/8 V
    1976 - 1980 Chevrolet K10 4.25/8 V
    1975 Chevrolet Caprice 4.25/8 V
    1975 Chevrolet Caprice 4.13/8 V
    1979 - 1980 GMC C1500 4.25/8 V
    1975 GMC Sprint 4.25/8 V
    1975 - 1978 GMC K15 Suburban 4.13/8 V
    1975 - 1976 Chevrolet Monza 3.67/8 V
    1980 GMC K1500 4.25/8 V
    1975 - 1978 GMC C25 4/8 V
    1976 - 1978 GMC C25 4.13/8 V
    1976 - 1980 Chevrolet C10 4.13/8 V
    1981 Chevrolet C10 Suburban /
    1979 - 1980 GMC K1500 4.13/8 V
    1983 - 1986 Pontiac Bonneville 3.74/8 V
    1980 - 1982 Oldsmobile Cutlass Cruiser 3.74/8 V
    1977 - 1978 GMC C25 3.74/8 V
    1978 - 1980 Oldsmobile Cutlass Supreme 3.74/8 V
    1980 - 1982 Chevrolet Caprice 3.5/8 V
    1977 - 1978 GMC K35 4/8 V
    1979 - 1980 GMC K3500 4.13/8 V
    1976 Chevrolet G20 4.25/8 V
    1975 Chevrolet Malibu 4.25/8 V
    1978 - 1985 Chevrolet G30 3.74/8 V
    1977 Buick Regal 4/8 V
    1975 Chevrolet Monte Carlo 4.13/8 V
    1975 - 1976 GMC Sprint 4.13/8 V
    1978 - 1979 Pontiac LeMans 4/8 V
    1980 Chevrolet G30 /
    1976 Chevrolet Laguna /
    1978 Chevrolet C30 3.74/8 V
    1979 - 1980 GMC G2500 4.13/8 V
    1979 GMC G1500 4.13/8 V
    1976 - 1977 GMC K25 Suburban 4.25/8 V
    1981 GMC K1500 Suburban /
    1975 Chevrolet Impala 4.13/8 V
    1975 Chevrolet Bel Air 4/8 V
    1975 - 1978 GMC C35 4.25/8 V
    1978 GMC C35 3.74/8 V
    1986 GMC C3500 3.74/8 V
    1980 - 1981 GMC G3500 /
    1978 GMC C25 Suburban 4.13/8 V
    1985 Chevrolet K20 Suburban 4.25/8 V
    1976 Chevrolet Caprice /
    1975 Chevrolet Monte Carlo 4.25/8 V
    1975 Chevrolet Corvette 4/8 V
    1975 Chevrolet Laguna 4/8 V
    1977 Pontiac Ventura 3.74/8 V
    1977 Oldsmobile Delta 88 4/8 V
    1976 GMC G15 4.13/8 V
    1984 GMC G3500 3.88/8 V
    1975 Chevrolet Bel Air 4.13/8 V
    1978 Buick LeSabre 3.74/8 V
    1979 GMC C3500 4.13/8 V

    Specs:

    Brand MSD
    Color Red
    Distributor Type HEI
    Emission Code 5
    Product Type Distributor Cap
    Warning California Proposition 65
    Warranty Limited 1 Year Warranty
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 32916289764

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    4.3 ★★★★★
    Based on 316 reviews
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    Product Reviews
    H
    Verified Purchase
    Hatem
    Grantham, US
    ★★★★★ 5
    Klipsch R50 M next generation
    Size: 5.25” Woofer
    In spite of small size sound is very nice iam using it with a subwoofer and with my yamaha A4A AV receiver i like it iam hearing mostly heavy metal and the speakers have a nice punch and attack
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 18, 2026
    Y
    Verified Purchase
    Yaniv.F
    New York, US
    ★★★★★ 4
    compact surrounds that blend well with the right setup
    Size: 4” Woofer
    I picked up the Klipsch R‑40M as part of a full 5.1 system built around the R‑50M fronts and the R‑50C center. My original plan was to use another pair of R‑50M speakers in the back, but they simply didn’t fit in the rear cabinet space I have. The R‑40M ended up being the only model that fit comfortably, so they became my surround channels. In terms of build quality, they feel solid and consistent with the rest of the Reference Next‑Gen line. The copper woofers and updated horn design give them the same visual identity as the larger models, which helps the whole system look cohesive. They’re compact enough to place in tighter spaces without compromising too much on performance. Sonically, the R‑40M does a respectable job as a surround speaker. Effects are clear, directional cues are easy to follow, and they integrate smoothly with the more powerful R‑50M fronts. That said, they are noticeably less powerful than the R‑50M, so you need to spend a little time balancing your levels. Once I bumped their channel trim a bit and adjusted the distance settings, the rear soundstage locked in nicely and felt much more even. They won’t deliver the same fullness or dynamic punch as the larger models, but for rear channels that’s usually not a deal breaker. What matters is clarity and consistency, and the R‑40M handles both well. Movies with active surround mixes feel immersive, and ambient effects wrap around the room without calling attention to the speakers themselves. If you’re building a system where space is limited in the back, the R‑40M is a practical and capable choice. Just be prepared to fine tune your calibration so they match the output of the bigger speakers up front. Once dialed in, they round out a 5.1 setup very effectively.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 22, 2026
    I
    Verified Purchase
    Integrion
    Omaha, US
    ★★★★★ 5
    Great Bang for the Buck!
    Size: 5.25” Woofer
    These R50 Studio Monitors are worth every penny. One could easily spend a heck of a lot more to get less. Have been a pro audio engineer my entire life. These monitors kick out clean, solid bass and accurate highs. Klipsch did a excellent job designing these monitors. Perfect for smail spaces where fidelity is critical. If you wall mount these, make sure you leave at least a 1.5 inch air gap between the back of the monitor and the wall. These units are sweet.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on July 22, 2025
    K
    Verified Purchase
    Kgolfinghawaii
    Lake Worth, US
    ★★★★★ 5
    Worth the price
    Size: 5.25” Woofer
    I had in ceiling front speakers and went with these instead. The front ceilings are now height speakers. Sounds great now.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 23, 2026
    A
    Verified Purchase
    Amazon Customer
    Draper, US
    ★★★★★ 5
    Small but mighty
    Size: 5.25” Woofer
    Great sound. I can turn my stereo up loader than I care to listen to it and notice no distortion.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 20, 2026

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